What costs a lot of money, sounds like a swarm of angry hornets and really shouldn't be used near airports? Drones, or more accurately quad copters (drones implies autonomous, they aren't). I have one of these things languishing in my garage (there's only so many aerial views of my culdesac I need) but it required a lot less skill to put together than this offering by vitreolum, and it makes a lot more noise.
Original author: Tommy