Don't act like a clown; build one. All four multicolored pieces of this building set look like they came straight from a circus. The two base pieces have balls trapped inside that rattle. The clown head goes next, topped off with a conical yellow hat. But there's more than meets the eye with the Stacking Clown. The hat is a prism that works when viewed from the wide or the narrow end, and the clown's head is a rattle that also clicks when it's twisted. All of the durable plastic pieces are large enough for safety and easy to wipe off.