I have a friend who got into woodworking as a hobby and now he has his own store on Etsy. He mostly makes spoons, but he also found out there's a market for hand-made wooden tops. Like the kind you spin on a table and then stare at like a retard until it stops spinning.
My money-making suggestion was to buy some steak knife blade blanks and then make some custom wooden handles for them. Foodies would buy that kind of shit up fast, but he thought it was a boring idea. Whenever he makes me something, he'll give me a list of 8-10 woods to choose from and invariably, I will pick the most expensive wood in the list. I know nothing about wood.
There is a company called Lie-Nielsen Toolworks that I bought most of my tools from when I started learning.
The cover of every sale flyer (not the main catalog) has examples of stuff made by craftsmen--usually as a hobby, not as a business for profit enterprise. The most recent one has a cool set of knives made from scratch (not using blanks). I'll try to scan it as an example of what a good metal worker can do for fun as a hobby--not for profit. Of course, I'm sure the guy could make money doing it if he wanted to.