Personal drones have become a so common that they have started to come in all sorts of shapes and sizes. A new crowdfunding campaign wants to stretch that size range even further. The name Wallet Drone probably says it all. The drone itself actually isn't the size of your wallet. In fact, it is much smaller than that. The tiny quadrocopter fits inside a controller box and that controller is the one that is the size of your wallet, letting you carry fun and mayhem anywhere you go.