Remember how we learned about the sweet, sweet, awesomeness that is Ferrofliud?
Well, hold on to your socks! Some Genius on Kickstarter has designed a key chain that harnesses the power that is ferrofluid for your every day enjoyment!
Simple and effective, and all explained on Kickstarter, these keychains are a non-toxic vial of 100% isopropyl alcohol and a dash of ferrofluid. They keychain comes with a magnet are are possibly the coolest, safest, long-term fun you could give anyone.
They are also really reasonably priced at around US$10 + $5 shipping!
Kickstarter has a video of all the cool tricks, yes you read that right tricks, that you can do with your keychain and magnet! Its pretty amazing stuff!