My son is turning one this week and I finished his new toy box just in time for his party this morning. The box is about 16.5"x17"x17.5" (lxwxh) with the 2.5" casters installed. The sides are 3/4" shop grade birch plywood and the top (including the fish) is 1/2" baltic birch. The fish comes out of the top like a puzzle piece so he can toss his toys in, hopefully it will make cleaning up fun, but I doubt it. Special thanks to Joe Scharle for providing the thin walnut I used to make the eyeball on the fish.