Build S.T.E.M.-driven models, such as DJ Bubbles (an octopus spinning records), a pterodactyl, a yeti, and much more! Kinetic sculptures, or automata, are mechanically engineering toys that move when you crank the handle on the side. They move through a series of axles, cams, and cranks that work like the pistons in an engine. Each model includes a papercraft character that you fold and link with LEGO elements.