Lipstick tube holder? 
Here’s a fancy one made of leather:
https://www.amazon.com/Rustic-Leather-Keychain-Holder-Protection/dp/B07BFJRQQT/
I’ve never had this happen or come close to being an issue, and I’ve edc’s different twisties since forever. The threaded section is always long enough that it doesn’t ever loosen. I wonder if you are just using lights with crappy machining, and/or body tubes that are too short or cells that are too long. Maybe the answer is get better lights, but failing that, check your O ring.
Bit late to the party but my Skilhunt E3A has amazingly good threads that never come apart on their own, unlike several others I've tried.
Thicker O-ring should do the trick.
never had that but maybe with tape 2 layers stuck back to back but one is half width
w= regular tape
t= half as wide
s= sticky side
B is the boundary between light halves
L is light body so
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
SSSSSSSSSSSSSS
TTTTTTTTTTTTTT
LLLLLLLLLLLLLBLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
LLLLLLLLLLLLLBLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
LLLLLLLLLLLLLBLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
TTTTTTTTTTTTT
SSSSSSSSSSSSS
SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
if that makes sense then you wrap that around so the bottom half is not really stuck, it puts a non-stick layer on the light to add friction wle
For zipper-pulls, I used to just slap some scotchtape around it. Kept it in-place forever, and if I needed to use the light, just reapply later.