We’ve seen how strange ferrofluids can be, and we’ve seen people do some pretty weird stuff with glow sticks. Now see what happens when you combine them!
Cosmic. Physics Girl (previously at Neatorama) says don’t try this at home, but if you can get your hands on some ferrofluid, I don’t see how you could resist. Bonus: She’s got dry ice, too! -via Geeks Are Sexy