If you want cheap and very decent, Convoy has some nice ones and they come in many sizes. Most are under $5.
3 Thanks
The Convoy holsters look very nice, but they wonāt work for my application.
I need that plastic ring that the Xtar and OneTigris holsters have. 
Necrobump!
Iāve been using this One Tigris holster everyday for about eight months.
The One Tigris generic Velcro is starting to wear out.
ā¦
Today, I received these two flashlight holstersā¦
https://www.amazon.com/dp/B01N0ZAZQE
Iām hoping that Moobibearās generic Velcro will last longer.
Like the previous holster, these holsters are only big enough for a 1x21700 flashlight with a 45 mm head (like my Convoy M21E.)
Anything bigger would most likely be too big.
These black holsters are not adjustable like the One Tigris holster, but they are a lot cheaper. 