Ferrofluid is a magic goo that goes completely bonkers in the presence of magnets. Press magnets up to this ferrofluid lava lamp, and it'll look as if Magneto was having an aneurysm, but in a fun way. This thing normally runs $149.99, but you can get yours now for just $79.99.
This classic-looking bike is built using algorithms and geometry too complex for us to even fathom, especially considering that the only geometry we thought applied to bikes were the two circles. Clearly we were wrong, because this will be the smoothest ride you'll ever have. Normally $499, you can get it now for just $399.