Púa Holder

First, sketch a fish. Then make the craft out of paper. Adjust the design on paper before you get into material.

...then trace on leather, or denim if you are some kind of hippie who think he's saving cows.

Fold the sides together. Hammer the snaps down so it can be put on and off a belt. (the center snap should be a small one because the big snaps are hard to open. Glove snaps would work best) glue the sides or get fancy and sew them. Or use rivets. This picture is a prototype and it's not ready for production. Everything is fine except that middle snap button, which is too strong for something dangling off my hip. It is a Cal. 24 snap. There are Cal. 20 snaps which are lighter duty. And glove snaps which are even lighter duty. And then magnetic snaps which are are probably the easiest to open. Glove snaps are probably the way to go since you're supposed to be able to open it to get the pick with one hand and it will merely pull toward you and not open if the snap is too strong. If you are wondering, those loops are made from 10oz Latigo strap. It's actually too thick so I had to carve the gauge down so the button post would fit. 6-8oz Latigo strap is better.

Púa means Guitar pick in Spanish, but since your new leather rock star pants don't have pockets you can use the bottom loop as a key holder. Or rivet in a carabiner. Or make leather pants with pockets and use your pockets to carry your keys.