http://www.youtube.com/watch?v=LgshXgHwcaU?feature=player_detailpage

Do you know a kid that likes to pretend that they are a wizard or a fairy princess? How would you like to give them a toy wand that can turn on/off electronic devices like magic? You may even be able to teach them a thing or two about electronics in the process.

In this instructable I am going to show you how you can make magnetic switches that can be used to activate a circuit just like a regular momentary switch.