I've just figured out how to fly any of your creations Gary ... hang them below the quad-copter on mono-filament threads, so they can be filmed with the quad-copter out of frame. Simples!
I've often been tempted by these magic toys, but now I've seen these ...
Hubsan Q4 Nano Quadcopter | Maplin I've just gotta have one. The whole thing should fit in the center of 'plan B'.
There are u-tube vids of them flying in swarms ...
https://www.youtube.com/watch?v=AiCFtmdrvHM
Dang it, they're out of stock. Maybe just as well, 'cos maybe they'll re-stock with a camera version.
Of course, if you think bigger ...
https://www.youtube.com/watch?v=L75ESD9PBOw
Keep on snippin' ... Johnny.
Just poked me nose further into Maplins ... for an extra tenner they've got the camera version ... IN STOCK .... Ordered