This shape sorter features 12 chunky, vibrantly colored shapes that make a clinking sound as they drop into the natural finished hardwood cube. Children can then open the lid, take them out and start all over again.
— As of 4/11/2012 this product had 3.1 out of 5 stars from 157 reviews on Amazon.com. Pros: More advanced than a traditional shape sorter (has more shapes). Cons: Lid is loose; some of the shapes are too similar and can fit in the wrong holes.