<PAGE>

                                                                 EXHIBIT 10.35

                                                               Debenture No. 001


THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT
OF 1933 OR QUALIFIED UNDER ANY APPLICABLE STATE SECURITIES LAWS.
IT MAY NOT BE SOLD OR TRANSFERRED IN THE ABSENCE OF AN
EFFECTIVE REGISTRATION STATEMENT OR QUALIFICATION UNDER SUCH
SECURITIES LAWS OR AN OPINION OF COUNSEL, SATISFACTORY TO THE
COMPANY, THAT THE SALE OR TRANSFER IS PURSUANT TO AN EXEMPTION
FROM THE REGISTRATION OR QUALIFICATION REQUIREMENTS OF SUCH
SECURITIES LAWS.

                              NATURAL WONDERS, INC.

                     15% Convertible Subordinated Debenture
                    (convertible into shares of common stock)

$400,000                                                     Fremont, California
                                                              September 11, 2000

     NATURAL WONDERS, INC., a Delaware corporation (the "Company"), for value
received, hereby promises to pay to Renaissance Capital Group, Inc. or such
other person in whose name this Debenture is registered on the Debenture
Register (as that term is defined below) (the "Holder"), the principal amount of
Four Hundred Thousand Dollars ($400,000), with simple interest on the unpaid
balance of such principal amount at the rate of fifteen percent (15%) per annum
from the date of this Debenture. Interest on the outstanding principal balance
shall be computed on the basis of a 360 day year of twelve 30-day months and
shall be paid to the Holder on March 15, 2001, September 15, 2001 and March 15,
2002 (each, an "Interest Payment Date"). Each Debenture delivered upon
registration of transfer or in exchange for or in lieu of this Debenture shall
carry the rights to interest accrued and unpaid, and to accrue, which were
carried by this Debenture.

     The full principal amount of this Debenture, plus interest, will be due and
payable on March 15, 2002 (the "Maturity Date"). Payment of interest and
principal shall be made in lawful money of the United States of America by wire
transfer to an account designated by the Holder appearing on the Debenture
Register.

     This Debenture is a duly authorized Debenture of the Company, limited to
the aggregate principal amount of $400,000.

<PAGE>


     1. REPRESENTATIONS, WARRANTIES AND COVENANTS.

        1.1 ORGANIZATION, GOOD STANDING AND QUALIFICATION. The Company is a
corporation duly organized, validly existing and in good standing under the laws
of the State of Delaware and has all requisite corporate power and authority to
carry on its business as now conducted and as proposed to be conducted. The
Company is duly qualified to transact business and is in good standing in each
jurisdiction in which the failure to so qualify would have a material adverse
effect on its business or properties.

        1.2 VALID ISSUANCE OF DEBENTURES AND SHARES. The Debenture, when issued,
sold and delivered in accordance with the terms hereof for the consideration
expressed herein, will be a valid and binding obligation of the Company,
enforceable against the Company in accordance with its terms, and based in part
upon the representations of the Holder contained in the Subscription Agreement
pursuant to which this Debenture is being issued, will be issued in compliance
with all applicable federal and state securities laws. The shares of the
Company's Common Stock, $.0001 par value per share, issuable upon conversion of
the Debentures (the "Shares") have been duly and validly reserved for issuance
and, upon issuance in accordance with the terms of this Debenture, shall be duly
and validly issued, fully paid and nonassessable.

        1.3 COMPLIANCE WITH OTHER INSTRUMENTS. The Company is not in violation
of or default under any provisions of its Certificate of Incorporation or Bylaws
as amended and in effect on and as of the date of this Debenture or of any
material provision of any instrument or contract to which it is a party or by
which it is bound or, to its knowledge, of any material provision of any federal
or state judgment, writ, decree, order, statute, rule or governmental regulation
applicable to the Company. The execution, delivery and issuance of this
Debenture will not result in: (a) any such violation or be in conflict with or
constitute, with or without the passage of time and giving of notice, a default
under any such provision, instrument or contract; or (b) an event which results
in the creation of any lien, charge or encumbrance upon any assets of the
Company.

     2. SUBORDINATION.

        2.1 SUBORDINATION. The indebtedness evidenced by this Debenture is
subordinate and junior in right of payment to all Senior Debt (as such term is
defined below) to the extent provided herein, and the Holder, by such Holder's
acceptance hereof, agrees to the subordination herein provided and shall be
bound by the provisions hereof. Senior Debt shall continue to be Senior Debt and
entitled to the benefits of these subordination provisions irrespective of any
amendment, modification or waiver of any term of the Senior Debt or extension or
renewal of the Senior Debt.


                                       -2-

<PAGE>

        2.2 SENIOR DEBT DEFINED. As used herein, the term "Senior Debt" shall
mean the following whether now outstanding or subsequently incurred, assumed or
created: (a) all indebtedness (whether or not secured) of the Company or its
subsidiaries to banks, insurance companies or other financial institutions
regularly engaged in the business of lending money, including without
limitation, the indebtedness now or hereafter owing to (i) IBJ Whitehall Retail
Finance and each of the other Lenders, as set forth and defined in a certain
Loan Agreement dated September 11, 2000 entered into with the Company, and
(ii) Hilco Capital, LP; (b) such other indebtedness of the Company or its
subsidiaries to the extent that the instrument creating or evidencing such
indebtedness provides that it shall constitute Senior Debt; (c) any indebtedness
issued in exchange for such Senior Debt, or any indebtedness arising from the
satisfaction of such Senior Debt by a guarantor; and (d) any deferrals,
renewals, or extensions of any such Senior Debt.

        2.3 DEFAULT ON SENIOR DEBT. If an event of default occurs under any
Senior Debt, then, upon written notice of such default to the Company by the
Holders of Senior Debt or any trustee therefor, (a) the Holder may not take any
action to accelerate or enforce its rights and remedies until the holders of the
Senior Debt have confirmed in writing that such default shall have been cured or
duly waived or the Senior Debt has been paid in full or shall have ceased to
exist, and (b) no direct or indirect payment (in cash, property, securities, by
set-off or otherwise) shall be made or agreed to be made on account of the
principal of or interest on this Debenture, or in respect of any redemption,
repayment, retirement, purchase or other acquisition of this Debenture.

        2.4 PRIOR PAYMENT OF SENIOR DEBT.

                (a) In the event of: (i) the acceleration by any holder of
        Senior Debt of the payment thereof or the commencement of an action to
        enforce the rights and remedies of any holder of Senior Debt upon a
        default under such Senior Debt; (ii) any insolvency, bankruptcy,
        receivership, liquidation, reorganization, readjustment, composition or
        other similar proceeding relating to the Company; (iii) any proceeding
        for the liquidation, dissolution or other winding up of the Company,
        voluntary or involuntary, whether or not involving insolvency or
        bankruptcy proceedings; (iv) any assignment by the Company for the
        benefit of creditors; or (v) any other marshalling of the assets of the
        Company, all Senior Debt (including any interest thereon accruing after
        the commencement of any such proceedings) shall first be paid in full
        before any payment or distribution, whether in cash, securities or other
        property, shall be made to any Holder on account of the principal or
        interest on this Debenture. Any payment or distribution, whether in
        cash, securities or other property (other


                                       -3-

<PAGE>

        than securities of the Company or any other corporation provided for by
        a plan of reorganization or readjustment the payment of which is
        subordinate, at least to the extent provided in these subordination
        provisions with respect to the indebtedness evidenced by this Debenture,
        to the payment of all Senior Debt at the time outstanding and to any
        securities issued in respect thereof under any such plan of
        reorganization or readjustment), which would otherwise (but for these
        subordination provisions) be payable or deliverable in respect of this
        Debenture shall be paid or delivered directly to the holders of Senior
        Debt in accordance with the priorities then existing among such holders
        until all Senior Debt (including any interest thereon accruing after the
        commencement of any such proceedings) shall have been paid in full. In
        the event of any such proceeding, after payment in full of all sums
        owing with respect to Senior Debt, the Holder of this Debenture,
        together with the holders of any obligations of the Company ranking on a
        parity with this Debenture, shall be entitled to be paid from the
        remaining assets of the Company the amounts at the time due and owing on
        account of unpaid principal of and interest on this Debenture and such
        other obligations before any payment or other distribution, whether in
        cash, property or otherwise, shall be made on account of any capital
        stock or any obligations of the Company ranking junior to this Debenture
        and such other obligations.

                (b) In the event that, notwithstanding the foregoing, any
        payment or distribution of any character, whether in cash, securities or
        other property (other than securities of the Company or any other
        corporation provided for by a plan of reorganization or readjustment the
        payment of which is subordinate, at least to the extent provided in
        these subordination provisions with respect to the indebtedness
        evidenced by this Debenture, to the payment of all Senior Debt at the
        time outstanding and to any securities issued in respect thereof under
        any such plan of reorganization or readjustment), shall be received by
        any Holder in contravention of any of the terms hereof, such payment or
        distribution or security shall be received in trust for the benefit of,
        and shall be paid over or delivered and transferred to, the holders of
        the Senior Debt at the time outstanding in accordance with the
        priorities then existing among such holders for application to the
        payment of all Senior Debt remaining unpaid, to the extent necessary to
        pay all such Senior Debt in full. In the event of the failure of any
        such Holder to endorse or assign any such payment, distribution or
        security, each holder of Senior Debt is hereby irrevocably authorized to
        endorse or assign the same.

        2.5 NO IMPAIRMENT OF RIGHTS. Nothing contained herein shall impair, as
between the Company and the Holder, the obligation of the Company to pay such


                                       -4-
<PAGE>

Holder the principal of and interest on this Debenture or prevent such Holder
from exercising all rights, powers and remedies otherwise permitted by
applicable law or hereunder upon an Event of Default (as defined below)
hereunder, all subject to the rights of the holders of the Senior Debt to
receive cash, securities or other property otherwise payable or deliverable to
the Holder of this Debenture.

        2.6 SUBROGATION. Upon the payment in full of all Senior Debt, the
Holders of the Debentures, together with all other subordinated debt of the
Company ranking on a parity therewith, shall be subrogated to all rights of any
holders of Senior Debt to receive any further payments or distributions
applicable to the Senior Debt until the indebtedness evidenced by the Debentures
shall have been paid in full, and such payments or distributions received by the
Holders thereof, by reason of such subrogation, of cash, securities or other
property which otherwise would be paid or distributed to the holders of Senior
Debt, shall, as between the Company and its creditors other than the holders of
Senior Debt, on the one hand, and such Holders on the other hand, be deemed to
be a payment by the Company on account of Senior Debt and not on account of the
Debentures.

        2.7 NO IMPAIRMENT OF SECURITY INTEREST. The provisions of this Debenture
shall not impair any rights, remedies or powers of any secured creditor of the
Company in respect of any security interest. The securing of any obligations of
the Company otherwise ranking on a parity with the Debentures or ranking junior
to such Debentures shall not be deemed to prevent such obligations from
constituting, respectively, obligations ranking on a parity with such Debentures
or ranking junior to such Debentures.

        2.8 AMENDMENT OF SUBORDINATION PROVISIONS. No modification or amendment
of the subordination provisions contained in Section 2 hereof in a manner
adverse to the holders of Senior Debt may be made without the consent of all
holders of Senior Debt.

        2.9 UNDERTAKING. By its acceptance of this Debenture, the Holder agrees
to execute and deliver such documents as may be reasonably requested from time
to time by the Company or the lender of any Senior Debt in order to implement
the foregoing provisions of Section 2 hereof.

     3. NO RESTRICTIONS ON ISSUANCE OF ADDITIONAL DEBT. Nothing contained in
this Debenture shall restrict the Company from creating, assuming or incurring
any additional indebtedness, whether ranking junior to, on par with, or senior
to, this Debenture, or require the Company to obtain the consent of the Holder
with respect thereto.

                                       -5-

<PAGE>

     4. DEFAULT.

        4.1 EVENT OF DEFAULT. Each of the following events shall be an Event of
Default hereunder:

                    (a) Default in the payment of any interest on this Debenture
          when due, continued for two (2) business days.

                    (b) Default in the payment of the principal on the
          Maturity Date.

                    (c) Material default in the performance of any of the
          covenants or agreements of the Company contained in this Debenture
          continued for thirty (30) days after notice thereof (provided,
          however, that if the default cannot reasonably be corrected within
          such period, there shall be no event of default if corrective action
          is instituted promptly and is pursued diligently until the default is
          corrected).

                    (d) If a petition in involuntary bankruptcy is filed against
          the Company under any bankruptcy, reorganization, arrangement,
          insolvency, readjustment of debt, dissolution or liquidation under the
          law of any jurisdiction, whether now or hereafter in effect, and is
          not stayed or dismissed within thirty (30) days after such filing, or
          if the Company shall make an assignment for the benefit of creditors,
          or shall file a voluntary petition in bankruptcy, or shall be
          adjudicated a bankrupt or insolvent, or shall file any petition or
          answer seeking for itself any reorganization, arrangement,
          composition, readjustment, liquidation, dissolution or similar relief
          under any present or future statute, law or regulation, or shall seek
          or consent to or acquiesce in the appointment of any trustee, receiver
          or liquidator of the Company or of all or any substantial part of the
          properties of the Company, or commence voluntary or involuntary
          dissolution proceedings.

                    (e) Default under Senior Debt that gives the holder thereof
          the right to accelerate such Senior Debt, and such Senior Debt is in
          fact accelerated by such holder.

        4.2 REMEDIES ON DEFAULT, ETC.

                    (a) If an Event of Default occurs and is continuing after
          the expiration of any applicable grace period, the Holder may declare
          the Debenture immediately due and payable.

                                       -6-
<PAGE>


                    (b) In case of a default in the payment of any principal or
          interest due on this Debenture, the Company shall pay to the Holder
          thereof the amount owing together with: (i) simple interest on the
          amount owing at the rate per annum equal to fifteen percent (15%) on
          the amounts past due; and (ii) such additional amount as shall be
          sufficient to cover the cost and expenses of collection, including,
          without limitation, reasonable attorneys' fees, expenses and
          disbursements.

                    (c) No right, power or remedy conferred by this Debenture
          upon any Holder shall be exclusive of any other right, power or remedy
          referred to herein or now or hereafter available at law, in equity, by
          statute or otherwise.

     5. CONVERSION.

        5.1 CONVERSION RIGHTS. The Holder may at any time, and from time to
time, prior to the first to occur of the Maturity Date or the date fixed by the
Company for redemption of this Debenture (the "Redemption Date"), convert this
Debenture or any portion of the principal amount hereof which is $50,000 or an
integral multiple of $50,000, into Shares, at a conversion price of $1.50 per
Share (the "Conversion Price"), subject to adjustment in certain events
described below.

        The number of Shares that the Holder shall receive upon any such
conversion shall be determined by dividing the principal amount of this
Debenture to be so converted by the Conversion Price in effect at the time of
such conversion. In the event that this Debenture is called for redemption, the
right to convert the Debenture shall terminate at the close of business on the
Redemption Date and will be lost if not exercised prior to that time unless the
Company defaults in making the payment due upon redemption. In the event of a
partial conversion of this Debenture, the Company shall execute and deliver to
the Holder a new Debenture in the aggregate principal amount equal to and in
exchange for the unconverted portion of the principal amount of the Debenture so
surrendered for conversion.

        5.2 EFFECT OF CONVERSION; ISSUANCE OF SHARES ON CONVERSION. Conversion
of this Debenture shall be deemed to have been made at the close of business on
the date that the Debenture shall have been surrendered for conversion,
accompanied by written notice of election to convert in the form of Exhibit "A"
attached hereto (or such other form reasonably acceptable to the Company), and
thereupon the Holder shall have no further rights hereunder, except with respect
to the receipt of accrued interest due hereunder and the Shares issuable upon
conversion of this Debenture. As soon as practicable after full or partial
conversion of this Debenture, the Company shall pay to the Holder all interest
accrued hereunder with

                                       -7-
<PAGE>

respect to the portion of the Debenture so converted to the date of conversion.
In addition, as soon as practicable after full or partial conversion of this
Debenture, the Company shall, at its expense, cause to be issued in the name of,
and delivered to, the Holder a certificate or certificates for the number of
Shares to which the Holder shall be entitled on such conversion, together with
any other securities and property to which the Holder is entitled on such
conversion under the terms of this Debenture. No fractional shares will be
issued on conversion of this Debenture. If on any conversion of this Debenture a
fraction of a share results, the Company will pay the cash value of that
fractional share, calculated on the basis of the then effective Conversion
Price.

        5.3 ADJUSTMENTS TO CONVERSION PRICE.

                    (a) If the Company shall at any time while this Debenture is
          outstanding subdivide the outstanding shares of its Common Stock, the
          Conversion Price then in effect immediately before that subdivision
          shall be proportionately decreased, and if the Company shall at any
          time while this Debenture is outstanding combine the outstanding
          shares of Common Stock, the Conversion Price then in effect
          immediately before that combination shall be proportionately
          increased. Except as otherwise provided below, any adjustment under
          this Section 5.3 shall become effective at the close of business on
          the date the subdivision or combination becomes effective. A dividend
          on any security of the Company payable in Common Stock, or a split of
          the Company's Common Stock, shall be considered a subdivision of
          Common Stock for purposes of this Section 5.3 at the close of business
          on the record date with respect to such dividend or stock split. A
          reverse split of the Company's Common Stock shall be considered a
          combination of Common Stock for purposes of this Section 5.3 at the
          close of business on the record date with respect to such reverse
          stock split.

                    (b) In the event the Company, at any time or from time to
          time while this Debenture is outstanding, shall make or issue, or fix
          a record date for the determination of holders of Common Stock
          entitled to receive, a dividend or other distribution with respect to
          the Company's Common Stock payable in securities of the Company other
          than shares of Common Stock, then and in each such event, provisions
          shall be made so that the Holder shall receive upon conversion hereof,
          in addition to the number of shares of Common Stock receivable
          thereupon, the amount of securities of the Company which he would have
          received had this Debenture been converted into Common Stock on the
          date of such event and had the Holder thereafter, during the period
          from the date of such event to and including the conversion date,
          retained such securities receivable by him.

                                       -8-

<PAGE>


                    (c) If while this Debenture is outstanding, the Shares
          issuable upon conversion of this Debenture shall be changed into the
          same or a different number of shares of any other class or classes of
          stock of the Company, whether by recapitalization, reclassification or
          other exchange (other than a subdivision or combination of shares, or
          a capital reorganization, merger or sale of assets, provided for
          elsewhere in this Section 5.3), the Holder shall, upon the conversion
          of this Debenture, be entitled to receive, in lieu of the Shares which
          the Holder would have become entitled to receive but for such change,
          a number of shares of such other class or classes of stock that would
          have been subject to receipt by the Holder if he had exercised his
          right of conversion of this Debenture immediately before that change.

                    (d) If while this Debenture is outstanding, there shall be a
          merger or consolidation of the Company with or into another
          corporation (other than a merger which does not result in any
          reclassification, conversion, exchange or cancellation of outstanding
          shares of Common Stock of the Company), or the sale of all or
          substantially all of the Company's properties and assets to any other
          person, then, as a part of such merger, consolidation or sale, lawful
          provision shall be made so that the Holder shall thereafter be
          entitled to receive upon conversion of this Debenture, during the
          period specified in this Debenture, the number of shares of stock or
          other securities or property of the Company, or of the successor
          corporation resulting from such merger, consolidation or sale, to
          which a holder of the Shares deliverable upon conversion of this
          Debenture would have been entitled on such merger, consolidation or
          sale if this Debenture had been converted immediately before such
          merger, consolidation or sale. In any such case, appropriate
          adjustment shall be made in the application of the provisions of this
          Section 5.3 with respect to the rights of the Holder after such
          merger, consolidation or sale to the end that the provisions of this
          Section 5.3 (including adjustments of the Conversion Price then in
          effect and number of shares purchasable upon conversion of this
          Debenture) shall continue to be applicable after that event and shall
          be as nearly equivalent to the provisions hereof as may be
          practicable.

                    (e) The Company shall promptly and in any case not later
          than ten (10) days after the date of any adjustment of the Conversion
          Price give written notice of such adjustment and the number of Shares
          or other securities issuable upon conversion of this Debenture, by
          first-class mail, postage prepaid, to the registered Holder at the
          Holder's address as shown on the Debenture Register. The certificate
          shall state such adjustment and show in reasonable detail the facts on
          which such adjustment is based.


                                       -9-

<PAGE>


                    (f) The form of this Debenture need not be changed because
          of any adjustment in the Conversion Price or in the number of Shares
          issuable upon its conversion. A Debenture issued after any adjustment
          on any partial conversion or upon replacement may continue to express
          the same Conversion Price and the same number of Shares (appropriately
          reduced in the case of partial conversion) as are stated on this
          Debenture as initially issued, and that Conversion Price and that
          number of Shares shall be considered to have been so changed as of the
          close of business on the date of the adjustment.

     6. OPTIONAL REDEMPTION.

        6.1 RIGHT OF REDEMPTION. This Debenture may be redeemed at the election
of the Company, as a whole or from time to time in part, at any time, at one
hundred percent (100%) of the principal amount of this Debenture, together with
accrued interest to the Redemption Date.

        6.2 REDEMPTION PROCEDURES.

                    (a) Notice of redemption shall be given by first-class mail,
          postage prepaid, mailed not less than thirty (30) nor more than sixty
          (60) days prior to the Redemption Date, to the Holder, at the address
          appearing in the Debenture Register and to the Company at its
          principal place of business.

                    (b) The notice of redemption shall state: (a) the Redemption
          Date; (b) that on the Redemption Date the redemption price will become
          due and payable on the Debenture and that interest thereon will cease
          to accrue on and after said date; and (c) the place where the
          Debenture is to be surrendered for payment of the redemption price.
          Any notice that is mailed in the manner herein provided shall be
          conclusively presumed to have been given whether or not the Holder
          receives said notice.

                    (c) Notice of redemption having been given as aforesaid, the
          Debenture shall, on the Redemption Date, become due and payable at the
          redemption price therein specified, and from and after such date
          (unless the Company shall default in the payment of the redemption
          price and accrued interest) the Debenture shall cease to bear
          interest. Upon surrender of the Debenture for redemption in accordance
          with said notice, the Debenture shall be paid by the Company at the
          redemption price, together with accrued interest to the Redemption
          Date.

                                      -10-

<PAGE>

                    (d) If the Debenture shall not be so paid upon surrender
          thereof for redemption, the principal shall, until paid, bear interest
          from the Redemption Date at the rate borne by the Debenture.

     7. REGISTRATION OF TRANSFER AND EXCHANGE.

        7.1 DEBENTURE REGISTER. The Company shall cause to be kept at the
principal office of the Company a register (the "Debenture Register") in which,
subject to such reasonable regulations as it may prescribe, the Company shall
provide for the registration and the transfer of the Debenture subject to the
provisions regarding transferability contained in this Debenture. Upon surrender
for registration of transfer of any Debenture at the principal office of the
Company, the Company shall execute and deliver, in the name of the designated
transferee or transferees, one or more new Debentures in minimum denominations
of $50,000 and integral multiples of $50,000.

        7.2 TRANSFER OF DEBENTURES. At the time the Debenture is presented or
surrendered for registration of transfer it shall (if so required by the
Company) be duly endorsed, or be accompanied by a written instrument of transfer
in form satisfactory to the Company, duly executed by the Holder thereof or his
attorney duly authorized in writing. No service charge shall be made for any
registration of transfer, but the Company may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed in
connection with any registration of transfer of the Debentures.

        7.3 REPLACEMENT DEBENTURE.

                    (a) If the Debenture is mutilated and is surrendered to the
          Company, the Company shall execute and deliver in exchange therefor a
          new Debenture of like tenor and principal amount and bearing a number
          not contemporaneously outstanding. If there shall be delivered to the
          Company: (i) evidence to its satisfaction of the destruction, loss or
          theft of the Debenture; and (ii) such security or indemnity as may be
          required by it to save the Company and any agent harmless. Then, in
          the absence of notice to the Company that the Debenture has been
          acquired by a bona fide purchaser, the Company shall execute and
          deliver, in lieu of any such destroyed, lost or stolen Debenture, a
          new Debenture of like tenor and principal amount and bearing a number
          not contemporaneously outstanding. In the event such mutilated,
          destroyed, lost or stolen Debenture has become or is about to become
          due and payable, the Company in its discretion may, instead of issuing
          a new Debenture, retire such Debenture.

                                      -11-

<PAGE>

                    (b) Upon the issuance of any new Debenture under this
          Section 7.3, the Company may require the payment of a sum sufficient
          to cover any tax or other governmental charge that may be imposed in
          relation thereto and any other expenses connected therewith.

                    (c) Any new Debenture issued pursuant to this Section 7.3 in
          lieu of any destroyed, lost or stolen Debenture shall constitute an
          original additional contractual obligation of the Company, whether or
          not the destroyed, lost or stolen Debenture shall be at any time
          enforceable by anyone.

                    (d) The provisions of this Section 7.3 are exclusive and
          shall preclude (to the extent lawful) all other rights and remedies
          with respect to the replacement or payment of mutilated, destroyed,
          lost or stolen Debentures.

     8. LIMITATIONS ON DISPOSITION. The Holder understands that this Debenture,
the Shares issuable upon conversion of this Debenture and any other securities
issued under this Debenture are "restricted securities" under the federal
securities laws inasmuch as they are being acquired from the Company in a
transaction not involving a public offering and that under such laws and
applicable restrictions such securities may be resold without registration under
the Securities Act of 1933, as amended (the "Act") only in certain limited
circumstances. In this connection, the Holder represents that it is familiar
with Rule 144 under the Act and the limitations imposed thereby and by the Act.

     The Holder further agrees not to make any disposition of all or any portion
of this Debenture, the Shares or any other securities issued hereunder unless
and until: (a) there is then in effect a Registration Statement under the Act
covering such proposed disposition and such disposition is made in accordance
with such Registration Statement; or (b) the Holder shall have (i) notified the
Company of the proposed disposition and shall have furnished the Company with a
reasonably detailed statement of the circumstances surrounding the proposed
disposition; and (ii) furnished the Company with an opinion of counsel,
satisfactory to the Company, that such disposition will not require registration
of the securities under the Act.

     The Holder understands that this Debenture, the Shares and any other
securities issued hereunder may bear the following legend, together with any
other legend required by law:

          "The securities represented hereby have not been registered
          under the Securities Act of 1933, or any state securities
          laws. These securities may not be sold or transferred in the


                                      -12-
<PAGE>

          absence of an effective registration statement or
          qualification under such securities laws or an opinion of
          counsel, satisfactory to the Company, that the sale or
          transfer is pursuant to an exemption from the registration
          or qualification requirements of any applicable securities laws."

     9. LIMITATIONS ON DIVIDENDS AND DISTRIBUTIONS. So long as this Debenture is
outstanding, the Company shall not declare, pay, make or set apart any sum for a
dividend or other distribution (whether in cash or other property) with respect
to any class of capital stock of the Company (other than dividends or
distributions payable in its capital stock), or for the redemption, retirement,
purchase or other acquisition for value of any share of any class of capital
stock of the Company or any warrants or rights to purchase any class of capital
stock of the Company.

     10. REGISTRATION RIGHTS.

        10.1 DEFINITIONS. For purposes of Section 10 hereof, terms not otherwise
defined herein shall have the following meanings:

                    (a) The terms "register," "registered" and "registration"
          refer to the preparation and filing of a registration statement in
          compliance with the Act and the rules promulgated thereunder, and the
          declaration of the effectiveness of such registration statement, or
          the taking of similar action under a successor statute or regulation.

                    (b) The term "Registrable Securities" means the Shares
          issuable upon conversion of the Debenture or exercise of the Warrant,
          and any securities issued or issuable with respect to such Shares by
          way of a stock dividend or stock split or in connection with a
          combination or shares, recapitalization, merger, consolidation or
          other reorganization.

                    (c) The term "Rights Holder" or "Rights Holders" means any
          registered holder or holders of Registrable Securities.

                    (d) The term "Prospectus" means a prospectus that complies
          with applicable provisions of the Act.

                    (e) The term "Warrant" refers to the Warrant issued to
          Rights Holders by the Company on September 11, 2000 concurrently with
          the offer and sale of the Debentures.

                                      -13-
<PAGE>


        10.2 DEMAND REGISTRATION.

                    (a) On any date after March 15, 2001, the holders of at
          least fifty percent (50%) of the Registrable Securities then
          outstanding (the "Initiating Rights Holders") may request in writing
          registration under the Act (a "Demand Registration"). The Demand
          Registration request shall specify the amount of the Registrable
          Securities proposed to be sold, the intended method of disposition
          thereof and the jurisdictions in which registration is desired. Upon
          the receipt of the Demand Registration request, the Company promptly
          shall take such steps as are necessary or appropriate to prepare for
          the registration of the Registrable Securities to be registered.
          Within fifteen (15) days after the receipt of such request, the
          Company shall give written notice thereof to all other Rights Holders
          and include in such registration all Registrable Securities held by a
          Rights Holder from whom the Company has received a written request for
          inclusion therein at least ten (10) days prior to the filing of the
          registration statement. Each such request will also specify the number
          of Registrable Securities to be registered, the intended method of
          disposition thereof and the jurisdictions in which registration is
          desired.

                    (b) The Company shall use its reasonable best efforts to
          cause any such Demand Registration to become effective not later than
          one hundred twenty (120) days after it receives a request under this
          Section 10.2. A registration requested pursuant to this Section 10.2
          shall not count as the one Demand Registration to which the Rights
          Holders are entitled to thereunder unless such registration statement
          is declared effective and remains effective for at least ninety (90)
          days.

                    (c) If Rights Holders of a majority of the Registrable
          Securities proposed to be registered by the Initiating Rights Holders
          so elect, the offering of such Registrable Securities pursuant to such
          Demand Registration shall be in the form of a firm commitment
          underwritten offering. If any Demand Registration of Registrable
          Securities is in the form of an underwritten offering, the Rights
          Holders holding a majority of the Registrable Securities proposed to
          be registered by the Initiating Rights Holders shall select and obtain
          an investment banking firm of national reputation to act as the
          managing underwriter of the offering (the "Approved Underwriter");
          provided, that the Approved Underwriter shall, in any case, be
          acceptable to the Company in its reasonable judgment.

                                      -14-

<PAGE>

                    (d) The Company shall not be obligated to effect any
          registration under this Section 10.2 except in accordance with the
          following provisions:

                        (i) The Company shall not be obligated to use its
            reasonable best efforts to file and cause to become effective more
            than one registration statement with respect to Registrable
            Securities held by the Rights Holders initiated pursuant to this
            Section 10.2; provided, however, that any registration proceeding
            begun pursuant to this Section 10.2 that is subsequently withdrawn
            at the request of the Rights Holders shall not be so counted if such
            withdrawal is based upon material adverse information relating to
            the Company or its condition, business, or prospects which is
            different from that generally known to the Rights Holders at the
            time of their request.

                        (ii) The Company may delay the filing or effectiveness
            of any registration statement for a period of up to ninety (90) days
            after the date of a request for registration pursuant to this
            Section 10.2 if (x) at the time of such request the Company is
            engaged, or has formal plans to engage within sixty (60) days of the
            time of such request, in an underwritten public offering of Shares,
            (y) the Board of Directors of the Company determines in good faith
            that (A) it is in possession of material, non-public information
            concerning an acquisition, merger, recapitalization, consolidation,
            reorganization or other material transaction by or of the Company or
            concerning pending or threatened litigation and (B) disclosure of
            such information would jeopardize any such transaction or litigation
            or otherwise materially harm the Company, or (z) the Company shall
            furnish to the Rights Holders a certificate signed by the Chief
            Executive Officer or President of the Company stating that, in the
            good faith judgment of the Board of Directors of the Company, it
            would otherwise be seriously detrimental to the Company and its
            investors for such registration statement to be filed and it is
            therefore essential to defer the filing of such registration
            statement.

        10.3 PIGGYBACK REGISTRATION.

                    (a) If, at any time, through and including the third
          anniversary date of the issuance of this Debenture, the Company
          proposes to register any of its securities under the Act (other than
          in connection with a merger pursuant to a Form S-4 Registration
          Statement or an employee stock compensation plan pursuant to a Form
          S-8 Registration Statement), it will give written notice by

                                      -15-
<PAGE>

          registered mail, at least thirty (30) days prior to the filing of each
          such registration statement, to the Rights Holder of its intention to
          do so. If the Rights Holder notifies the Company within twenty (20)
          days after receipt of any such notice of its desire to include any
          Registrable Securities in such proposed registration statement, the
          Company shall afford such Rights Holder the opportunity to have any of
          the Registrable Securities registered under such registration
          statement and included in any underwriting involved with respect
          thereto.

                    (b) Notwithstanding the provisions of this Section 10.3:
          (i) the Company shall have the right at any time after it shall have
          given written notice pursuant to this Section 10.3 (irrespective of
          whether a written request for inclusion of any Registrable Securities
          shall have been made) to elect not to file any such proposed
          registration statement, or to withdraw the same after the filing but
          prior to the effective date thereof; and (ii) in the event a
          registration under Section 10 hereof relates to an underwritten public
          offering which does not include any securities being offered and sold
          on behalf of selling shareholders, the inclusion of any Registrable
          Securities may, at the election of the Company, be conditioned upon
          the Rights Holder agreement that the public offering of such
          Registrable Securities shall not commence until ninety (90) days after
          the effective date of such registration.

                    (c) The rights of the Rights Holder pursuant to Section 10
          hereof shall be conditioned upon such Rights Holder's participation in
          the underwriting with respect thereto and the inclusion of such Rights
          Holder's Registrable Securities in such underwriting (unless otherwise
          mutually agreed by the Company, the managing underwriter or, if none,
          a majority of the underwriters, and such Rights Holder) to the extent
          provided herein.

                    (d) Notwithstanding any other provision of this Debenture,
          if the managing underwriter or, if none, a majority of the
          underwriters, determines that marketing factors require a limitation
          of the number of shares to be underwritten or a complete exclusion of
          such shares, such underwriter or underwriters may limit the number of
          Registrable Securities that may be included in the registration and
          underwriting or exclude all of the Registrable Securities, as
          appropriate. In the case of an underwritten registration in which the
          number of Registrable Securities that may be included is limited, the
          Company shall advise the Rights Holder of the limited number of
          Registrable Securities that may be included in the registration, and
          the number of Registrable Securities that may be included in the
          registration and underwriting shall be allocated among all Rights
          Holders thereof in proportion, as nearly as

                                      -16-

<PAGE>


          practicable, to the respective amounts of Registrable Securities
          entitled to inclusion in such registration held by such Rights Holders
          at the time of filing the registration statement.

                    (e) The Company shall (together with all Rights Holders
          proposing to distribute their securities through an underwriting)
          enter into an underwriting agreement in customary form with the
          underwriter or underwriters selected for the underwriting.

                    (f) If, after the third anniversary date of the issuance of
          this Debenture, the Registrable Securities owned by the Holder
          continue to be subject to a legend or other transfer restriction which
          treats the Holder as having affiliate status as that term is used in
          Rule 144 of the Act, then the Holder shall continue to have a one-time
          right to include any Registrable Securities in a proposed registration
          statement subject to the procedures described in Section 10.2 hereof.
          This registration right shall expire on the earlier of: (i) the
          conclusion of the Holder's affiliate status; or (ii) the sixth
          anniversary date of the issuance of this Debenture.

        10.4 EXPENSES. All expenses incurred in connection with any registration
pursuant to this Debenture, including without limitation, all registration,
filing and qualification fees, printing expenses, fees and disbursements of
counsel for the Company, and expenses of any special audits incidental to or
required by such registration, shall be borne by the Company; provided however
the Company shall not be required to pay:

                    (a) fees of legal counsel of any Rights Holder, or
          underwriters' fees, discounts, commissions or expenses relating to
          Registrable Securities; and

                    (b) for expenses that the Company is prohibited from paying
          under Blue Sky laws or by Blue Sky administrators.

        10.5 COMPANY RESPONSIBILITIES. In the case of a registration effected by
the Company pursuant to this Debenture, the Company shall use its best efforts
to keep the Rights Holder advised in writing as to the initiation, effectiveness
and completion of such registration. At its expense the Company shall:

                    (a) prepare and file a registration statement (and such
          amendments and supplements thereto) with respect to such Registrable
          Securities and use its best efforts to cause such registration
          statement to become and remain effective for a period of one hundred
          eighty (180) days or until the


                                      -17-
<PAGE>

          Rights Holder or Rights Holders have completed the distribution
          described in the registration statement relating thereto, whichever
          first occurs;

                    (b) furnish such number of copies of a Prospectus in
          conformity with the requirements of applicable law, and such other
          documents incident thereto as a Rights Holder from time to time may
          reasonably request; and

                    (c) use every reasonable effort to register or qualify the
          Registrable Securities covered by such registration statement under
          the state Blue Sky laws of such jurisdictions as the Company's Board
          of Directors may reasonably determine, and do any and all other acts
          and things which may be necessary under said Blue Sky laws to enable
          the sellers of the Registrable Securities to consummate the public
          sale or other disposition of the Registrable Securities owned by them
          in such jurisdictions, except that the Company shall not for any
          purpose be required to qualify to do business as a foreign corporation
          in any jurisdiction wherein the Registrable Securities are so
          qualified.

        10.6 INDEMNIFICATION.

                    (a) The Company shall indemnify the Rights Holder, each of
          the Rights Holder's officers and directors, and each person
          controlling such Rights Holder, with respect to such registration
          effected pursuant to Sections 10.2 and 10.3 hereof, and each
          underwriter, if any, and each person who controls any underwriter of
          the Registrable Securities, against all claims, losses, damages and
          liabilities (or actions in respect thereto) arising out of or based on
          any untrue statement (or alleged untrue statement) of a material fact
          contained in any registration statement or related Prospectus, or
          based on any omission (or alleged omission) to state therein a
          material fact required to be stated therein or necessary to make the
          statements therein not misleading, or any violation by the Company of
          any rule or regulation promulgated under any securities law applicable
          to the Company and relating to action or inaction required of the
          Company in connection with any such registration, and shall reimburse
          the Rights Holder, each of the Rights Holder's officers and directors,
          and each person controlling such Rights Holder, each such underwriter
          and each person who controls any such underwriter, for any legal and
          any other expenses reasonably incurred in connection with
          investigating or defending any such claim, loss, damage, liability or
          action, provided that the Company shall not be liable in any such case
          to the extent that any such claim, loss, damage or liability arises
          out of or is based on any untrue statement or omission based

                                      -18-

<PAGE>

          upon written information furnished to the Company in an instrument
          duly executed by such Rights Holder or underwriter specifically for
          use therein.

                    (b) The Rights Holder shall, if Registrable Securities held
          by or issuable to the Rights Holder are included in the securities as
          to which such registration is being effected, indemnify the Company,
          each of its directors and officers who sign such registration
          statement, each underwriter, if any, of the Company's securities
          covered by such a registration statement, each person who controls the
          Company within the meaning of the Act, and each other Rights Holder,
          each of such Rights Holder's officers and directors and each person
          controlling such Rights Holder, against all claims, losses, damages
          and liabilities (or actions in respect thereof) arising out of or
          based on any untrue statement (or alleged untrue statement) of a
          material fact contained in any such registration statement or related
          Prospectus, or any omission (or alleged omission) to state therein a
          material fact required to be stated therein or necessary to make the
          statements therein not misleading, and shall reimburse the Company,
          such Rights Holders, such directors, officers, persons, or
          underwriters for any legal or any other expenses reasonably incurred
          in connection with investigating or defending any such claim, loss,
          damage, liability, or action, in each case to the extent, but only to
          the extent, that such untrue statement (or alleged untrue statement)
          or omission (or alleged omission) is made in such registration
          statement or related Prospectus in reliance upon and in conformity
          with written information furnished to the Company in an instrument
          duly executed by such Rights Holder specifically for use therein.

                    (c) Each party entitled to indemnification under this
          Section 10.6 (the "Indemnified Party") shall give notice to the party
          required to provide indemnification (the "Indemnifying Party")
          promptly after such Indemnified Party has actual knowledge of any
          claim as to which indemnity may he sought, and shall permit the
          Indemnifying Party to assume the defense of any such claim or any
          litigation resulting therefrom, provided that counsel for the
          Indemnifying Party, who shall conduct the defense of such claim or
          litigation, shall be approved by the Indemnified Party (whose approval
          shall not be unreasonably withheld), and the Indemnified Party may
          participate in such defense at such party's expense; and provided
          further that the failure of any Indemnified Party to give notice as
          provided herein shall not relieve the Indemnifying Party of its
          obligations under this Section 10.6. No Indemnifying Party, in the
          defense of any such claim or litigation, shall, except with the
          consent of each Indemnified Party, consent to entry of any judgment or
          enter into any settlement, which does not include as an unconditional
          term thereof,


                                      -19-
<PAGE>

          the giving by the claimant or plaintiff to such Indemnified Party of a
          release from all liability in respect to such claim or litigation.

        10.7 RIGHTS HOLDER'S OBLIGATIONS. The Rights Holder shall furnish to the
Company such written information regarding such Rights Holder and the
distribution proposed by such Rights Holder as the Company may reasonably
request in writing and as shall be required in connection with any registration
referred to in this Debenture.

        10.8 ASSIGNMENT. The rights granted to the Rights Holder pursuant to
this Debenture may be assigned to a transferee or assignee of the Debenture or
any of the Registrable Securities, provided that the transferee or assignee is
an affiliated entity of the Rights Holder and the Company is given written
notice at the time of or within 10 days after said transfer, stating the name
and address of said transferee or assignee and identifying the Registrable
Securities with respect to which such registration rights are being assigned.

     11. MISCELLANEOUS.

        11.1 AMENDMENT. The provisions of this Debenture may be amended or
modified only with the written consent of the Company and the Holder.

        11.2 ENTIRE AGREEMENT. This Debenture constitutes the entire agreement
among the parties with regard to the subject matter hereof, and supersedes and
replaces any and all prior to contemporaneous agreements, written or oral. The
terms and conditions of this Debenture shall inure to the benefit of, and be
binding upon, the respective successors and assigns of the parties. Nothing in
this Debenture is intended to confer on any third party any rights, liabilities
or obligations, except as specifically provided.

        11.3 HEADINGS. The titles and subtitles used in this Debenture are for
convenience only and are not to be used in construing or interpreting this
Debenture.

        11.4 SEC FILINGS. During the term of this Debenture the Company shall
promptly forward to the Holder annual and periodic reports and proxy statements
required to be filed by the Company with the Securities and Exchange Commission
pursuant to the Securities Exchange Act of 1934.

        11.5 GOVERNING LAW. This Debenture shall be governed by the laws of the
State of Delaware.

                                      -20-

<PAGE>

        11.6 ATTORNEYS' FEES. The prevailing party in any action or proceeding
between the parties arising out of or related to this Debenture shall be
entitled to recover all reasonable expenses, including without limitation
attorneys, fees and costs, incurred in connection with any such action or
proceeding.

        IN WITNESS WHEREOF, the undersigned have executed this Debenture on the
date first above written.

                             NATURAL WONDERS, INC.



                             By:
                                ---------------------------------
                                Peter G. Hanelt
                                Chief Executive Officer




                                      -21-

<PAGE>

                                   EXHIBIT "A"

                            Form of Conversion Notice


To Natural Wonders, Inc.:

The undersigned Holder hereby irrevocably exercises the option to convert this
Debenture, or portion hereof (which is in the amount of not less than $50,000
and in increments of not less than $50,000 thereafter) below designated, into
shares of the Company's Common Stock, $.0001 par value per share, in accordance
with the terms of the Debenture, and directs that the shares issuable and
deliverable upon such conversion, together with any check in payment for
fractional shares and any Debentures representing any unconverted principal
amount hereof, be issued and delivered to the undersigned unless a different
name has been indicated below. If shares or Debentures are to be issued in the
name of a person other than the undersigned, the undersigned will pay all
transfer taxes payable with respect thereto. Any amount required to be paid by
the undersigned on account of interest accompanies this Debenture.


Dated:
      -----------------------      ------------------------------------
                                   Signature


                                   -------------------------------------
                                   Taxpayer Identification Number


Principal Amount to be Converted: $
                                   ---------------------

If shares or Debentures are to be registered in the name of a person other than
the Holder, please print such person's name and address below:


Name:
            -------------------------------------
Address:
            -------------------------------------

            -------------------------------------


                                       A-1