I made this bullet bag last weekend:
It's made of buckskin from the last deer I got. The stitching is simulated sinew from Track of the Wolf. The leather cinch thong I had from some repair I did on a baseball glove years ago; it looks too uniform and therefore modern and out of place. My possibles bag is a bit of the same problem, it's machine- stitched (because it's a woman's purse) and it shows. Also I think it would look better with small seashells replacing the white beads. It's such a mish mash of old and new. But it's all I have so far. I need to get a powder horn at some point.
The design of the bullet bag came from the July/August 1980 issue of Muzzleloader magazine: