For many years, I have dutifully labeled and filed away unused foreign money
from trip for "next time." I now have a snazzy chest full of pre-Euro currency from pretty much every European country, along with leftovers from at least 60 other countries. I looked into some of the services that will exchange even out of circulation money, but it didn't seem worth the effort. I'd love to think of my grandchildren looking at this collection in wonder, but I'd give long odds on that.
Many of you must have a similar stash and I'm curious about whether it just goes into dead storage at your homes, too.