I make and sell custom tabletops compatible with the festool woodworking products. I cut them locally on my CNC router and advertise exclusively through craigslist. I do 3-5 per month of those, and another 10 projects / month that come from repeat customers - mostly hobbiests and contractors.
Through craigslist, I’ve ended up making components used in the Apple campus, and service pieces used in a 3 Michelin star restaraunt.