Take a look at these wooden wrist watches. A friend of mine has worn one for a couple of years -they look spectacular and weigh very little. I would imagine some type of CNC machine has been used but after careful inspection I think they could be turned on a lathe (links included). I can send more details if anyone would like to take up the challenge or maybe people have already. I am told they are made from wooden off- cuts.
Food for thought.
Regards. Haggy