Here's a couple from years ago just to stay on topic;
For the mag fed .22
The old 12ga. [If you build them right ammo wont fall out]
A couple for the rifle guys
I even made a try at a cheek riser/stripper clip holder for an SKS I had...turned out ok for a first run.
I generally built test runs out of split leather or garment leather from old jackets to get the pattern/fit right first. I came up with a really good "no sew" design that I use exclusively now and works really good on tapered cartridges. All you need for tools is a box cutter, metal ruler, chisel and a punch.
A lil injun-u-ity gose a lawng way