DIY Mini Foosball Table by u-creattecrafts: Made with clothespins and a ping pong ball! Micah and Lily would have a blast with this! I would actually use a slightly bigger box and make a larger foosball table!
Great idea for lego storage! Instead of flat surface, add lego mats. Creative Solutions for Small Space Play: Underbed Play Table with Drawers by Great Little Trading Co. (does not ship to U. but think of the DIY possibilities)