Not sure how good of an idea a Steam Deck would be for this. If you can't access Wikipedia, I imagine a replacement for its unprotected glass screen would be harder to come by if you drop it.
It might be an interesting idea given that the Steam Deck has reasonable amount of RAM/GPU. The main issue for a knowledge base might be the lack of a physical keyboard though.
Missing a chance to note (or configure for?) installation on a Raspberry Pi --- that'd make an affordable option to leave powered down, but ready to go in an EMI-shield/Faraday Cage.
The ones mentioned in this thread all use Kiwix for off-line wikipedia, OSM for maps, Khan for educational videos. It looks like internet-in-a-box is aimed at working well on low-powered devices, whereas nomad expects beefy hardware and includes local AI. Not sure how WROLPi differs from internet-in-a-box.
Maybe it's like linux distros: all based on the same software, but optimized for different use-cases or preferences.
whatever I think might be useful later, I capture through the web clipper extension. [0]
[0]: https://obsidian.md/clipper
https://internet-in-a-box.org/
https://wrolpi.org/
I used it on a long train trip. There was no internet due to drone attacks, and with Kiwix I could browse pre-downloaded Wikis
Maybe it's like linux distros: all based on the same software, but optimized for different use-cases or preferences.