A magnet is made out of a piece of iron. Do you know if you drop a magnet the molecules will scatter and the magnet will get weaker? Magnets can pick up steel, metal, nickel and iron, but not copper. If you put a magnet on a computer, stereo or a radio you will wreck them. There are 8 kinds of magnets. They are horseshoe, bar, doughnut, ball magnets,electromagnet, lodestone, button and ring.