You have one drywall screw, one 1.5 V alkaline cell, six inches of plain copper wire, one small neodymium disk magnet, and no other tools or supplies. You have 30 seconds to make an electric motor running in excess of ten thousand RPM. Can you do it? Surprisingly enough, you can.
Before I give you the URL for this exotic and exciting device – please note – it works. The screw could fly out of control (wear safety goggles) and, assuming you can hold the battery on while it spins at 10,000 rpm, you could end up with very burned fingers (wear gloves) – as the website says – don’t leave your common sense at home on this one.
Charon accepts absolutely no responsibility whatsoever and on that basis only – here is the URL Amaze your friends (ensuring that they are suitably protected, consistent with current legislation) – but don’t blind them with the science.