Just type in your search terms and generate AI PBR.
I typed in green shag carpet from 1975. It generated it.

 Poly: AI Texture Engine (withpoly.com)

Yeah, it's not so much a "generator" as it is just a search engine, but it's definitely a tool folks can use.

(Part of me deplores the use of the term  "AI" here, though - it really cheapens the true AI engines we are starting to see come out).

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley