I needed a new primer for a flintlock fowler (shotgun to you modern types ) and, as much as I hate doing this I made my own.
Sometimes is actually fun having a lathe.
I selected a redbud spalted burl stabilized pen blank, cut to the length I wanted, drilled appropriate sized holes in each end then slapped on the length ala the 'mandrel-less pen turning method'. A little while later it was shaped as i wanted. Picked up a hunk of scrap cocobolo, turned the cap, glued in the top and was done. The cap is designed to hold a thong if I want to use one. The brass tip is a spring loaded affair made and sold just for projects like this. Lucky I had one on hand.
Total working time, about one hour.
And, really, doing stuff like this is fun.