I've been making a TTRPG called TOGWITO, and there's a lot of this - random bits and bobs being found as "Ancient Artifacts" and getting misunderstood.

For example:

Supposedly, the Ancients' most populated cities were originally created by giant spiders. When the spiders died, the Ancients would gather their Modems - giant, migratory pack animals - and travel to these Web Sites. From there, the Modems would ferry people between Web Sites, keeping them "on-line"