Popsicle Stick Puzzles - An easy storage idea is a plastic baggy. These puzzles would be great to put in a diaper bag or purse to pull-out when you’re on-the-go and need a quiet activity! Could also add the little magnets to the back for fridge fun.
If you're traveling with kids, this travel felt board is a quick DIY craft that makes a great activity for kids stuck on a plane or in a car. It costs less than five dollars, takes less than an hour to make, and will save your sanity when you're on the go