I used to make stirrers from used computer fans and hard disc magnets. heres how: get a couple of those magnets, or just about any other magnets will do, just as long as they are flat and STRONG, glue them on the center of the fan. add some sort of riser blocks around the fan so that your jar that you'll place on it wont touch the magnets. connect the fan to a simple 5-12VDC voltage converter, place the jar on the fan, drop a piece of metal inside the jar, switch on the fan and let the swirly fun begin
did i say fan enough times?
If the brain were so simple we could understand it, we would be so simple we couldn't.
CosmicFool is a fictional character, a creation of imagination, and everything written above should not be taken seriously, or perhaps read at all.