Ferrofluid
I bought one of those bottles of ferrofluid, sold by "Thinkgeek." Unfortunately, my 2mm X 5mm disc magnet isn't powerful enough to cause much of an effect. I can cause waves of movement and even move small globules; however, I get zero spiking effects. Too too bad. Would have been a nifty parlor trick. Has anyone tried playing with ferrofluid with a larger implant?
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I kinda want to put one of those magents that come with it in my hand. You can break the black parts off, and the smaller black part is really powerful for its size.
http://www.gaussboys.com/store/index.php/accessories/gvf075.html
http://www.instructables.com/id/ferromagnetic-fluid/?ALLSTEPS