toddlers drop wooden shapes (triangle, ellipse, star, square, trapezoid, cylinder) through the matched holes, then open the lid and take them all out to start all over again. you should consider the noise level if noise is an issue in your environment. looking for dumpster rental in other cities? the best thing to do is to see a doctor. i have a friend who went to school with me; she said the same thing. yes, it burns calories and keeps you active all the day. like dinosaurs, it had a long, bony tail, claws at the end of its fingers, and teeth. 