I made a simple Oculus Rift sensor holder that is held to my drop ceiling rails by 12x6 magnets. I have two magnets in each slot for extra strength. Although I'm using them with my drop ceiling, you could attach them to any magnetic surface pretty easily. I got the magnets at Home Depot in their magnet section by fasteners. I used a standard 1/4-20 bolt that is 3/4" long.

If you do end up making these, I would greatly appreciate it if you let me know. I don't do too many designs but I'm always glad to hear when my design helps someone else out.

Thanks for looking!