Ok. It took longer than 1/2 hour. 1 hour. Mainly because it was so difficult to nail the brass brads onto the edge of a round object. This was my longest piece of veg tanned leather. I had some 1/4" white cedar I milled up Monday. Perfect application. Padre Ramon is a priest from Mexico that is in a nearby parish. He always carries a reading glasses case. This is a bit big for his small glasses, but as proof of concept. Don’t know how it works doing a knockoff, but this is for testing purposes. The holes for the brads in the leather went perfect. Just one small circle about .05 mm in diameter. Did the clone and tile with Inkscape to make them 1" apart. I used the visualize path extension in Inkscape that allow for measuring lengths of perimeters of objects. Thought about a Velcro closure since I have it in my sewing kit but instead used an upholstery tach in a piece of wood since I didn’t have a heavy duty snap in the leather working kit.
Not perfected but as a concept works.