So, I ran into a discussion board on Ravelry discussing how much money to leave from the tooth fairy and I thought this woman had a great idea. She leaves foreign money cause she doesn't want her kids to compare how much money they got with the kids at school. I'm sure there's more to it, but she didn't explain anything besides that. I think this could be so fun and educational! What do you guys think? And Joanna, I think you're the resident money collector, where's the best place to buy interesting foreign money? The only place I've ever noticed foreign exchanges are in international airports, which I don't frequent often.