Some things that came quickly to mind.

=Computing=

* Clacky keyboards and clacky keyboard accessories: http://shop.daskeyboard.com, http://elitekeyboards.com

* Liquid cooling kits: http://koolance.com

* Lattice ECP3 Versa (PCI-E FPGA kit): http://www.latticesemi.com/en/Products/DevelopmentBoardsAndK...

=Tools=

* Stuff from Jetbrains: http://www.jetbrains.com

* Sublime Text: http://www.sublimetext.com

* Reveal and/or Spark Inspector: http://revealapp.com, http://sparkinspector.com

* Fluid: http://fluidapp.com

* Several months of Linode, Rackspace, Heroku, etc.

=Hardware=

* Rascal Micro (Web-enabled, python-driven microcontroller platform): http://rascalmicro.com

* Arduino (because Arduino): http://arduino.cc/en/ArduinoCertified/IntelGalileo

* Phidgets (USB physical interface components kit): http://www.phidgets.com/products.php?category=18&product_id=...

* TI TIVA launchpad (learn C the really hard way): http://www.ti.com/ww/en/launchpad/tiva_c_head.html

* Makey Makey (Turn anything into a touch input): http://www.makeymakey.com/

* Misc wearable stuff: http://www.adafruit.com/category/65

* FPGA development board (Learn HDL): http://www.altera.com/education/univ/materials/boards/de0-na...

* USB Logic Analyzer: http://www.saleae.com/logic

* Lego MindStorms: http://mindstorms.lego.com and hacking links: http://andrew.ghost.io/hacking-lego-mindstorms-ev3-with-java...

* Sparkfun gift certificate: https://www.sparkfun.com/gift_certificates

* Adafruit gift certificate: http://www.adafruit.com/category/14

* A trip to Halted (bummer, no gift certificates): http://www.halted.com

=Food=

* PolyScience Sous Vide: http://cuisinetechnology.com/sousvide-creative.php (or this link: http://www.instructables.com/id/DIY-Sous-Vide-Machines)

* PolyScience Anti-Griddle: http://cuisinetechnology.com/the-anti-griddle.php

* PolyScience Sonic Prep: http://cuisinetechnology.com/sonicprep.php

* Actually, anything from PolyScience

* Chemicals: http://www.biozoon.de/shop, http://molecule-r.com, http://www.modernistpantry.com

* Breville Smart Oven (also great for solder paste reflow): http://www.brevilleusa.com/the-smart-oven-r.html

* iSi Thermo Whip: http://www.isi.com/us/culinary/for-professionals/products/th... and injector tips: http://www.isi.com/us/culinary/for-professionals/products/ac...

* Pacojet (I would like one, please): http://www.pacojet.com/en

* Gastrovac: http://www.cookingconcepts.com/en/appliances/Gastrovac/51

=Other=

* A Dremel: http://www.dremel.com

* Digital Cutter: http://www.silhouetteamerica.com

* Sugru: http://sugru.com

* Aerogel: http://www.buyaerogel.com

* An investment account at etrade, scottrade, vanguard, fidelity, etc.

* Skill badges: http://www.adafruit.com/category/70

* A TechShop membership: https://secure.techshop.ws/memberships.cfm

* Anything from United Nuclear or Information Unlimited (at your own risk): http://www.unitednuclear.com, http://www.amazing1.com

* DJI Phantom 2 Vision (assuming aerial photog appeals more than quadcopter hacking): http://www.dji.com/product/phantom-2-vision

* AeroQuad, APM:Copter, or Crazyflie (assuming quadcopter hacking appeals more than functioning quadcopter): http://www.aeroquadstore.com, http://copter.ardupilot.com, http://www.bitcraze.se

* One bitcoin (but, for etiquette's sake, be sure to remove the price tag)

Edit: adding more