I proposed the author to make a non-game version of Deluxe, a sort of animated drawing paper. I know a certain young niece of mine who'd be fascinated for days on end by it. Imagine if you could just draw stuff on virtual paper that moved by itself, maybe the Box2D engine will allow for some "creature physics", so the kids can draw dogs and cats (and, most likely, fiersome dinosaurs) that would have their own movement patterns, a bit like the wheels of the car in the demo video of Deluxe (but without the wheels, obviously).