quadcopter on a string

http://www.cnet.com/news/fotokite-phi-is-a-gopro-carrying-quadcopter-on-a-leash/

"The Fotokite Phi, on the other hand, greatly reduces the learning curve by essentially being a flying selfie stick. Designed by Perspective Robotics AG, the Phi landed on crowdfunding site Indiegogo today and follows the same path as the company's professional version in use by the BBC and other news outlets by eschewing a remote controller or mobile app for a simple retractable leash. And instead of having a built-in camera, it just uses a GoPro Hero3 or Hero4 camera.
Made to be ultraportable, the Phi folds down and fits entirely inside a tube roughly the size of a whisky bottle and with a camera it weighs just 350 grams (12.3 ounces). To get it ready to fly, you fold down the arms and twist a lock on top. Then you can attach a GoPro to the camera housing in front."

The concept here is interesting. I'm not sure 25 feet is a long enough cord though.  on the other hand, it makes learning how to use the darn thing a snap.