I have a big glass jar full of foreign currency; bills and coins left over from trips gone by. When I get ready to leave a place and have a substantial amount of local money, I get it changed to U.S. dollars at the airport, of course. But you always lose a couple of bucks that way, and sometimes it just takes too long to queue up at a currency exchange booth. Then, too, I generally intend to use leftover cash on a later trip, though I tend to forget I have it the next time I head to the same place.




