Magnetic Top and Snake: the magnetic tipped top stays on the perimeter of the steel snake- but since the top has much more mass, the snake moves the most, slithering to and fro. This kinetic art toy has been around for decades and takes advantage of Newton's 3rd law and rotational kinetic energy. Also- the snake looks more like a planarian flatworm if you ask me... Follow this link for info on where to get this and many other physics toys featured here at @physicsfun https://physicstoys.blogspot