The only things which will have value will end up being handmade/customized/repaired x where you're getting something because you like it, and like that it was made by someone like you. It is unlikely that it will be more than an--at best--equivalent to something printed out by an automated design program, but the "human touch" will be a tricky problem to automate, for various reasons.
Look at the comb, this is an ancient bit of technology, I mean, we've got combs that evolved on various creatures for fuck's sake, being able to smooth and remove debris from a layer of fibers is a problem that comes up a lot.
I've been having fun customizing beard combs recently, just from taking things which annoy me about this comb or that comb, plus things which I like from them, and hacking away at one or both until the problems are gone. No more pointy bits that snag my cheekbone or nostril, no more teeth that extend juuuust far enough to catch a mole or scrape me. Then I like to tinker a bit more and clean up how it looks. So far I can't understand why combs default to something like:
____ (<- big stupid stiffer end teeth)
____ (pretend there are more same-length teeth in here)
____ (pretend there are more same-length teeth in here)
____ (all same height middle teeth as end teeth)
____ (pretend there are more same-length teeth in here)
____ (pretend there are more same-length teeth in here)
____ (<- big stupid stiffer end teeth)
...when it seems this:
__ (<- no stupid stiff end teeth)
___ (shorter to longer teeth in here)
____ (last few shortened teeth in here)
____ (flat belly of the curve from the ends up to the middle teeth)
____ (last few shortened teeth in here)
___ (shorter to longer teeth in here)
__ (<- no stupid stiff end teeth)
Is so much more suited for a chunk of hard material being dragged across your face.
The missus watched my insane tinkering and nipping and sanding and lining things up and repeating and suggested that I should get some tools and some wood and try with that.
I was like "well damn I are dumb" because that is a great idea, and I could probably find people that would be willing to buy some neat customized handmade wooden combs (she even suggested stuff like a head comb with argon oil infused in the wood for her hair) on etsy or whatever.
While that sort of stuff could have a program written which could have a machine built which could take "I want an object for this purpose or goal" as inputs and output the resulting object to given specifications, we aren't quite there yet.
We're still a hell of a lot closer to that than we are to something which can make it meet the desired goal with interesting tweaks or flaws that turn into a better outcome (I clipped one of the stiff end pieces on a comb off because they're so fucking stupid argh, and nipped one of the end teeth by accident so rather than leave it rough where it would snag I smoothed it down and lined up the one beside it, etc, until I hit on the rounded shape as the right one) than was initially expected, and that's still not quite the same sort of "I desire this object" effect as something which someone spent time working on.
Once you can solve that problem, I'm pretty sure you'll be looking at a fully self-aware android whittling a piece of wood for you because it enjoys doing it.