Spinner

Rare earth magnets (good ones) can be very strong. Generally speaking, they are like any other closure, too small and you won't have enough surface area on areas needing a strong bond.

http://rare-earth-magnets.com/ makes some nice ones I've used before and they have various sizes, shapes and thicknesses. For what you're doing I'd say go with something 1/2" o...

You status totally brought back memories, not sure if you meant it but they way it was worded sparked the memory! Thx!

http://www.youtube.com/watch?v=TXvo8RZUdow