This has been floating around for a while now, but every time I see it, it brings a smile to my face so I thought I would share it anyways. Adam Nilsson made this crazy mobile graffiti machine that paints rainbows everywhere it goes. The bike has been rigged up with a lever arm and six spray paint cans attached to a tiny motor. When switched on the cans start spraying and are then lifted in a giant arc, creating a rainbow that’s at least 20 feet wide. Pretty cool if you ask me.