Now where it gets really interesting Tom, is when you want to make one for yourself. That's when turning etc takes ahold. The range of materiel that you can employ is amazing. I tend to favour antler (at least until I get a mini lathe to do some stuff in wood) it's easy to work with, you need a minimum of tools and the results can be spectacular. Here's a few examples of stuff that I've done. Good luck and this is a fun journey it just takes a couple of steps.
"Why spoil the beauty of a thing with legality?" - T. Roosevelt