A very simple motor made only by a copper wire and a neodymium magnet. It uses one AAA battery but it can be done with AA one too.
It's a simple motor, but unfortunately is not an efficient one, the battery drains quickly and heats up.
Warning: Be careful if you try to do this, the copper wire can get very hot and burn your fingers. Be sure that the wire can move freely and not touches battery poles being stuck..
