I used some of these to set up the projectors for Halloween. You can find the right size screw at your local hardware store and make a simple bracket using 2x4 parts and a screw bit. I attach a quick release plate to the bottom of the projector so it can be removed every night and you can lock the base at the right angle so people can easily hook it in and out every night. I use them because they're the cheapest versions I could find, but they're pretty expensive, especially since we use them with a bunch of very reasonably priced $40 projectors. between him and 2x4. People using this for the camera probably won't notice or bother, but I've had larger and more expensive mounts that have a much larger base and more surface area to grip and can work much better. (But they're cheaper, so you get what you pay for.)
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