I hate having to take my belt off to hang or remove my knife from it, and if you've seen my previous post about knives and the law you will know why I think it's important that you are able to easily remove your knife from your belt and store it when you are not using it. And while some knives come in sheaths that allow them to be easily clipped on and off of a belt not all do, so I made something that solves the issue.
A sheet of 3mm thick kydex was easy enough to cut to shape and after a bit of heating in the oven was pliable enough to fold into the shape below. One 'roll' to the left now houses my firesteel with it's home made laburnam wood handle, the whole thing then wraps around a belt and is secured at the bottom with a carabiner. It will fix securely to a belt without the carabiner but it's that that allows me to then hang my knife from it. The knife can then be easily removed and stowed in a rucksac and re-attached whenever necessary. The clip it'sef can be left on the belt once the knife is removed without causing offence or alarm to anybody or equally it can be removed as well without the need to take your belt off.