I wondered about trying filming with a small drone, so have acquired the newest version of the JJRC H20C.
I'm not expecting much from it, since it only cost £30, which for a small hexacopter featuring a camera, really isn't too bad. If I can manage to grasp flying it competently outside, I may experiment with taking some footage of a FNRttC, but only the stationary cyclists when stopped, from above ground level, not swooping amongst cyclists in motion !
At the moment, I'm just trying to fly it in the kitchen, and not scare Zev too much. It ought to be possible to fit it all into a small shoulder bag, with several batteries, and charge exhausted batteries up from a small 2Ah USB battery. Since the drone batteries are only 280mAh, enough for a few minutes flight, there ought to be several recharges in a 2Ah battery.
The camera seems to best be described as indifferent, and the 2GB Micro-SD card was missing (the supplier offered me 50p back, or two cards "when" I order more drones from them!), but I can go for a better, larger, more expensive one, when I leave this one in a tree.
I've only had to put three propellers back on, so far, and not lost or damaged any of them. The blades also do not slice into your fingers, hardly surprisingly.
Since it's only just over 30g, it bounces and survives fairly easily.
There's a review and some footage
here.