Any sort of flying drone is already awesome. How do you make it more awesome? Attach a camera and arm it with a paintball gun so it can fly around and shoot unsuspecting people, animals and/or objects. Doesn't that sound like a crap ton of fun?
The Xploderz water gun brings all the hurt of a paintball gun, but no mess. Instead, when that pellet tags you, you're greeted with a blast of water. Which probably feels quite refreshing in warm weather.