Donate at the airport. Major international airports often have collection bins throughout the airport that allow people to make donations. In order to prevent language barriers from creating an obstacle, these bins are often barrel shaped and made with clear plastic walls. This construction design allows tourists the easy viewing of many international currencies. There is often an image of a person, normally a child, who might need charity to help evoke a sense of giving. Seeing one of these bins is meant to make a traveler think to donate their leftover and unneeded currencies.
Donate on the plane. Some airlines, British Airways and Virgin for instance, are now accepting spare foreign currencies on their flights. All proceeds go to charity. Virgin gives their proceeds to "Change for Children" and British Airways has their own charity called "Flying Start." Other airlines are picking up on this trend. So, after boarding the plane simply ask a flight attendant if the airline has a charity that they contribute foreign currencies toward.
Donate from home. While every attempt may be made to donate the money from abroad, inevitably spare change or bills may be found while unpacking. In this case, consider programs like the one that UNICEF has to accept foreign currency. Paper and coins can be mailed directly to their charity headquarters with ease. Simply place the money in an envelope and mail it to their headquarters:
U.S. Fund for UNICEF
ATTN: Change for Good Program
125 Maiden Lane
New York, NY 10038
