Instead of changing those spare foreign notes and putting those coins in a tin to gather dust and eventually be thrown out, use them as a reminder of the vacation. Nowadays the lamination process is quick and inexpensive, so turn leftover notes into little plastic bookmarks or coasters. The coins can make a great little gift; just put them in a little cloth money bag or wallet -- perhaps one purchased on your travels.
Most travelers pass them by, but in almost every major city across the world there are painters and sketchers hard at work immortalizing their surroundings. Original artwork not only looks great on the wall back home, but finding an artist whose style somehow encapsulates the place can serve as an aesthetic memory of your vacation. For extra authenticity, find an artist off the beaten tourist track. This will also make your holiday keepsake more budget-friendly when traveling in a foreign country, as many street artists are happy to bargain with their customer while practicing their English.
Wherever you go in the world there will no doubt be some tasty snack, fruit juice, beer or liquor that is new to you. Avoid tourist shops and make sure to purchase any treats from a little independent bakery, liquor store or grocery shop. Not only does authentic food taste better but supporting independent stores helps to preserve the tradition. Store any perishables in checked luggage, as customs officers can be pretty unforgiving if they find food in carry-on baggage.
The experience of vacationing in a developing or even a Third World country can only improve by investing in a better future. Whether it's sponsoring the education of a child, investing in a local school or leaving a substantial donation toward medicine or drinking water, this souvenir will stay with you when all the plastic nick-knacks have been lost or discarded. Instead of giving a few cents to people on the street, buy local toys for a class of children and take photos when you meet them. The toys and photos will be special to you and the kids.
