D.G.
My 5 year old loves to play with his legos and hot wheels in the tub. We had the crayons (enjoyed those while they lasted) and the squirt toys and ducks. But his favorite so far is the legos and cars. Oh - and a plastic cup to dump water out over his head ! I don't remember what my older one liked at 7 (he's 10 now). We have a plastic tub in the bathroom and put a towel by the tub. When he gets out all his toys go on the towel to dry and then into the tub.