Think we'll maybe buy a card so my son (11) can use it. He can have his own spending money when we're at WDW in March. While we've worked hard to make sure he understands cash (i.e. counting change when using cash/money concepts such as understanding spending/saving/giving, and that once you've used it's gone) but figure it may be a good way to introduce to him some concepts of plastic money --- keeping track of how much he's used versus how much he had/has left when it's not bills and coins in his pocket.