I made this to mount a vive lighthouse on a drop ceiling without having to use any hardware or damage the ceiling in any way, Unfortunately I've moved since I made this and didn't take any pictures. This mounts directly on the ceiling tile support struts. It's made for a ceiling with 25mm wide supports.

Once the spring part is clipped to the support, it becomes locked in place when the light house base is slid into the clips on the bottom.

It worked for me, I mostly made this with guesses and eye measurements so if it's a bit too loose or tight then scale it to whatever you need.
If you have doubts, you can do a test by stopping it 1/4 to 1/2 way and testing it out since it should be fully functional even if the print is stopped early, then adjust and make a full print.

TEVO

Tornado

Doesn't Matter

No

Print so the part is sitting vertical on the bed.rnI printed this with a 0.6mm nozzle and the spring thickness is 0.6mm, For some reason Cura see's it as 0.59 so I had to force it to print the spring part, this shouldn't be an issue for smaller nozzles.