Whether you know it or not, there are magnets hidden everywhere- in hairdryers, in telephones,in compasses. Fantastic facts: Magnets will tell you how magnet make engines work, how they help you find your way, and even how magnet can be switched on and off. You can also discover how to make your own magnet out of a paper-clip or a nail, and how to turn a bowl of water and needle into a compass.