Imagine the military/intelligence applications for something like this. Build it into a bug-shaped body, and they can literally be a "fly on the wall" in places a spy could never go...
news.mit.edu

Researchers introduce a new generation of tiny, agile drones
MIT researchers developed an insect-size drone with soft actuators — akin to muscles — that are agile and resilient to collisions. The advance could boost aerial robots’ repertoire, allowing them to operate in cramped spaces and withstand collisions.