I agree, as this was our experience. We got the Playskool one that WatchingThemGrow linked to when our son was 14 mos. At that point all he could do was open the top and drop the shapes in, then dump it out. It was pretty boring. But now at newly 2, he loves it--he can do it but it is still somewhat of a challenge for him. I put the Tupperware one on his Xmas list.