I’m a bit behind on posting this but I figured it’s never too late to share something as creative as this. Adam Nilsson made this mobile graffiti machine that makes rainbows everywhere it goes… like literally, rainbows. What he did was rig up a bike with a lever arm and six spray paint cans attached. He starts a tiny motor and BAM, the paint cans start spraying and then they’re lifted in a giant arc, creating a rainbow that’s at least 20 feet wide. This would be impossible for a person to do in 20 seconds, but for this clever machine it’s a cinch. Not sure if people would appreciate a giant rainbow showing up on their building, but in certain cases I think this could make a wall look a lot better.