Here's a cool project - how to get super-strong magnets from old disk drives.  Make sure you get old SCSI drives for this project because they have the strongest magnets.  Drives from the mid-nineties and 4 to 9 gb capacity are great, because you can get them for free from the IT junk pile.  I demonstrate the trick to removing salvaged hard drive magnets from the magnet carrier in this short video I made to demonstrate Photo Story 3 for a presentation.  Produced using a Sennheiser HS-2 mic, Photostory, and no post processing.