Puzzlebox Orbit features a unique spherical design that protects helicopter blades from unintended impact with objects such as walls and ceilings, while lending a pleasantly technical aesthetic. Despite remote control helicopters in general having earned a reputation for being fragile we have been extremely pleased with the build quality and resilience of our samples. They have survived several falls and collisions over the course of development and testing without noticeable damage.

http://www.kickstarter.com/projects/puzzlebox/puzzlebox-orbit-brain-controlled-helicopter