Woodworking with the occasional bit of electronics mixed in to sell on Etsy and locally. Buy a bad ass CNC router, laser engraver, and 3d printer. And a bunch of Festool power tools. And a small shop. The YouTubers make it look easy, which I know it’s not. But I already enjoy doing this for personal projects. If I had better tools and more time, I am sure I could make professional quality items and would love doing it.