In order to cope with feelings of pointlessness, I made a list, and made #3:
It just needs stitching up the side which I will do once a device to help with stitching arrives. In reality, I have enough leather to make one of these, but upcycling sounded about right. The leather came from the outside of a two-fold wallet. The pattern’s nothing but a rectangle of 3×7 inches folded in half and glued.