Fisher-Price Building Blocks - Toy Box Builders Each set has 5 blocks plus a small rectangular building surface to use as a base for stacking Contains 3 clear sided blocks plus 2 activity blocks with open sides, all of course with unique actions, sounds and sights within them One block has a cow that spins around in his pasture, a scarecrow with fun rattle hay seeds, and a hen with loose eggs beads The other 2 blocks are new activity blocks where baby creates the action themselves