These guys are really sharp! A multicopter with minimum complexity (tricopter), light weight, fewest motors, able to carry a GoPro, and collapsible.
If you add waterproof to the list, and a few more autopilot functions, it would be an even more fearsome competitor in the world of drones. I love to see the innovation and collaboration that is going on right now in the Drone Industry. It is the first time when technology is so close to imagination.
http://singletrackworld.com/2014/01/the-pocket-drone-carries-camera-follows-phone/
Fundraising Kickstarter Page: http://www.kickstarter.com/projects/749707768/the-pocket-drone-your-personal-flying-robot
Drone User Group Network (http://www.dugn.org/)