I’d never thought of this before, until a friend brought it up when talking about their Holiday trips to see family across the Northwest. Give you youngster a lap desk, and they have easily accessible water, plus a nice flat surface for games, puzzles or just reading. What a great idea.
Link at Container Store
[...] previously featured a lap desk for road trips, but this one is much better for kids. The Desk to Go has two big pockets for all sorts of writing [...]