Topic: Quickcam Pro 9000 Cradle
I haven't seen a definitive QCP9K cradle yet that's as simple as the classic 4K one, so I played around with mine for a while until I came up with something half decent. You can see it here.
It's kind of mostly stable, keeps the camera low enough to get good minifig close-up shots, and doesn't require any technic building skills. Alternative designs or suggestions for improvements are welcome.