Via Engadget.  Hover Camera is a miniature drone that can fly safely indoors.

How about we add a light sensor that can detect li-fi/coded light signals, send it to map out an interior space and the position of all the lights.  Presto!  You have a very sci-fi way to commission a interior “smart” lighting system…like that scene from the movie Prometheus with the cool hovering tunnel scanner drones.