Make Change
coins Leftover lire? Random rubles? If you've returned from summer globetrotting with a pocketful of spare pesos or other foreign currency, convert them — to humanitarian aid, that is. Since 1991, Change for Good has collected more than $24 million in foreign change most people just throw away or dump in a drawer after traveling, using it to help needy kids around the globe. Many airlines, including American Airlines, British Airways and TWA, provide envelopes; or you can mail bills and coins to Travelex America, Change for Good/UNICEF, JFK Airport, Terminal 4 IAT, Jamaica, NY 11430.

— Elisa Bosley