Something that I’ve been rolling around in my head is 3D printed parts out of a manufacture-provided digital parts catalogue. You would have your local 3D printing shop where you go ask for such and such a screw, bolt, or other part. An hour later, you go pick up your part and repair whatever was broken. A device could be kept in good working order for decades if not centuries this way.

That contrasts with the current system where manufacturers must create and store a large number of parts, sometimes for years on end. If you have a 40 year old toaster that just needs a new handle, too bad. Chances are unless that is a very standardized part that is still in use, you’re completely out of luck.