What do you do with your leftover currency from your travels? It used to be, I'd try hard to spend it at the airport before we left, but I ended up buying overpriced junk I didn't really want or need. I went through a phase of trying to exchange it all before I came home, but then realized I tended to return to some of these places a lot and usually airport exchange places don't give the best rates anyway, so decided to just hang on to whatever I have left over from a trip. If I am awake/alert enough to think about it, I often do give some to the collections they do on international flights. But that still leaves me with baggies (and baggies...and baggies) of bills & coins from all our trips around the world. This sometimes is really useful (and surprising): I am heading to Singapore this week, and dug out my stash of Singapore money, and was surprised to find that I had the equivalent of about $80 US. It made me think that maybe I ought to make a spreadsheet up so I can see just how much I have in various currencies. This might be an interesting way of hedging against the dollar. What do you do with your leftover foreign currency from traveling?