Every kid needs a set of play money. It's necessary. How else can one play grocery store, restaurant, drive through, car wash, pizza delivery, bank, post office, book store, toy store, etc. without play money?
I've made play these play dollars out of craft foam. I've also made play dollars out of felt for a more eco friendly option.
I made the change out of an incomplete set of wooden checkers. I just painted half gold and the other half silver.
I also have saved the play credit cards that come in the mail for kids to play with.
Cost: $0.50, as I used 1/2 page of craft foam.