Flint 'wallet'?

[Mr. 16 gauge]

I recently read somewhere about a 'flint wallet"....supposedly something made of leather that one carries their flints in. I don't know if such a thing is historically correct....does anyone here know? Currently, I carry mine in an old altoid tin, but I can see where a wallet might make more sense; keeps the edges sharp by protecting them and not letting them bump into one another. Finally, if such a thing did exist, is there someplace I can find a pattern to make one? Thanks in advance.