This project is kinda couched in prepper language, but it legit seems like a good implementation of a thing I've often wanted to build. It's the best bits of the internet (e.g. WikiPedia, OpenStreetMaps, Gutenberg Project) that you can run locally. https://www.projectnomad.us/
Project NOMAD - Knowledge That Never Goes Offline

A self-contained offline server packed with encyclopedic knowledge, local AI, and essential tools β€” ready when the internet isn't.

Project NOMAD
I'm going to have to fork it to make a version that works on Fedora and uses Podman (I aint letting Docker loose on my personal computer), though.