Been traveling with kids and now grandkids for years. We always carry a deck of playing cards with us. Can be used so many ways depending on age of kids. When the are younger, use just a few cards to play a memory matching game, as their attention span grows, simple games like Go Fish, War, Solitare, Build a playing card house, teach them a simple card trick. Your options are only limited by your imagination. Playing cards are cheap & easy to carry.