My wife uses her ring light for all sort of things, but one day it fell over and snapped at the neck. I quickly took some measurements and printed this bracket (after a very quick and primitive test print) and surprisingly it works great! I don't know how many people this would help, but I'll post it anyway.

Also, I did have to remove the 1/4 inch threaded knurl from the broken part of the light and melt it into the PLA for this to work.

The tube part of the light is held in by the top supports and at the bottom by friction fit (be careful not to crack the plastic fitting it).

I believe the ring light is this one: https://www.amazon.com/Eicaus-Lighting-Ringlight-Photography-Compatible/dp/B0BL7GJNGC/