This is our initial test flight with a keychain camera. The rocket is an Estes Sky Lofter, with a C6-4 engine. For this initial flight, the keychain camera was attached via packing tape, although in future flights we switched to velcro to allow us to more easily move the camera between vehicles. We tried to place the camera as close to the center of gravity of the rocket as possible, although there's still some impact on stability as you can see from the roll/spiral during initial liftoff (I suspect because the rocket is now heavier on one side).