You're thinking along the right lines. I'd only emphasize that one should be on the lookout for things with a personalized component. Rings and bracelets that fit absolutely perfectly. Eyeglasses that are 95% standard parts off a shelf, but incorporate three printed parts that can be adjusted to make the glasses fit your face more perfectly than any others in their price range. That sort of thing.
Designs that only 100 people in the world want are a fine thing, but they will still require design, and that will make them expensive and hard to get right. Individualized things that only one person in the world wants, but which millions of people might want a tiny variation of, may be where the real money is.
Designs that only 100 people in the world want are a fine thing, but they will still require design, and that will make them expensive and hard to get right. Individualized things that only one person in the world wants, but which millions of people might want a tiny variation of, may be where the real money is.