Feel like taking a flyer on a possibly vaporware remote control sentry? Then step right up and make a pledge for the Paintball Robot ($1,200). This tactical robot will feature a top-mounted paintball gun with elevation change capabilities, as well as a tracked base that can climb stairs and turn in place, all while being light enough for a single person to carry it, and allowing you to control it from afar. Sound far-fetched? It might be, but you'll never know if you don't try.