Spin 'N' Sprinkle Water Lab features a water activity center that attaches to the tub and generates a double-chain reaction of surprising water effects. 2 Water play accessories: A test tube container with 1-10 numbered volume marks and a detachable funnel for filling, pouring and playing. Test tube holder attaches to tub for playing and storing. Pour water into the water gauge funnel to spin gauge and create 10 water sprays. Water causes eyes to roll, a stream from the mouth, and spins with propeller for endless hours of fun and learning.