A 1907 New York Amateur Athletic Union track medal. A 1922 Boston Marathon finishers medal, missing the ribbon and clasp. A great place to find medals is at antique shows. Some dealers will have cases filled with political buttons, small military items, etc. If you sift through the junk very often you can come up with a treasure.
Souvenirs are endless in their variety.
Olympic related items flood the market, from tacky ash trays to elegant posters. An attractive, nicely made piece cannot be ignored, but plastic Olympic keychains can. Except for Olympic items, there are no price guides. Make your best deal. A souvenir postcard of the 1929 'Bunion Derby' featuring the winner John Salo.