As Heinlein once said, “Long after the first star ship leaves for paths unknown, there will still be outhouses in upstate New York.” I expect he’ll be right, assuming that ship ever leaves at all. Few technologies ever go away completely.
Consider that there are guys out there right now, in this first-worldliest of countries, whose pleasure it is to knap flints, cherts, and obsidians into stone knives and arrowheads. The blades they make are pretty, but you can skin a deer with those things, and do surgery, and get past airport metal detectors. (Clovis points: the original North American superweapon.) On the other hand, you could just open your mail.
Naturally, once you’ve got a scene like that going, some flint-knappers are bound to get way good at what they do, and start turning it into art, and getting weird. Which brings us to the most Gibsonesque artifacts I know of: Stone tools made from fiber optic glass.
They also make them out of fused millefiori glass trade beads. And salvaged sky-blue glass from an old stage light lens Corning made for Hollywood in 1938. And vitrolite, that opaque architectural glass they used to use on storefronts. (Judging from the color, I’d guess that piece was salvaged from the facade of an old Woolworth’s building.)
I don’t know. Maybe future histories of materials science say that this was the period in which we finally started to get over our millennia-long initial infatuation with metal technology. And then again, maybe not.