I bought some leather from a gent at the local flea market a couple years back & fabricated my own, nothing fancy just function, about 7" a round at the top & probably 4" on the bottom & a shoulder strap, used leather lacing to tie it together, used a thin split deer leather to add some fringe around the top.
Lessons learned...even what seems to be a stiff leather will limber up with use,I used a thick pig leather for most of it, hoping it would help maintain the shape but after some use it softens up quite a bit, Also buy a quality leather punch, I bought a cheap one for just a few bucks & when the punch pierces the leather thers a small piece of plastic the gives it something to press against, mine went thru the leather then evntualy thru the plastic, look for one thats all metal so the punch can do its job.
All in all it was kinda fun & not much trouble, it dont look like a 3rd grader made it but definately dont look as slick as a store bought unit.