The other day we had a go at making these paper cups, inspired by the wonderful crafty blog over at RedTedArt. My son couldn't believe that a few folds of paper would be strong enough to hold water in, but it worked a treat.
My daughter kept her cup and filled it up with essential toddler nick nacks and play things to take in the car with her to Grandmas. I was relieved for one small car journey to have all those niggly bits and bobs contained.
There are stacks of great things to make and do over at RedTedArt and many of them are perfect for kids on the move.