+1 on making my own. I never really liked anything that came with any of my lights, so I went down this road. I came across an idea in one of Stormdrane's posts
here. I thought - I want something similar for a lanyard so I figured out how to do it. It not only looks cool (which I guess is subjective), but the braiding enables you to hook it to itself at any location. So you can size it to your wrist, use it with a small AAA lite in your front pocket like you would use a chain wallet, hook it to a belt, bag, whatever. Really flexible. To me a flashlight without a way to attach a lanyard is worthless. Sorry for my bad no contrast blurry pics :shakehead but you can at least see what I have done.
For my uses normal paracord is too bulky. These are made with something called Type I paracord from supply captain which is about 1/3 the thickness of the usual paracord.
On the holsters, same deal. I bought some cordura 1000 thickness material and have been playing around with that. It's pretty tough if you don't have the right equipment though, you can stitch by hand but that gets tedious after a while. I'm starting to think about buying some leather and going that route, but of course there is a learning curve there and not sure I have that kind of time right now. Simple smooth lights you can get away with a nylon sheath of some kind, but if you've got some larger hosts with gnarly knurling on them - probably only leather will do. I have looked on CPF and have not seen anybody offering to make custom leather holsters. I'm sure this would have a lot of takers, but the time investment to make a single hoster seems to be large. So in the meantime we make use of cheesy $5 holsters.