Yep, and I love it.
I've got a little Banana Pi M4 Zero (PiZero form factor but much more powerful and with 4 GB RAM) loaded up with, among other useful tools, Kiwix and the full Wikipedia dump. I just refreshed it with the 2026-02 full dump, so I'm caught up for the year. I've also got a lot of other offline docs loaded up (React, Bun, and the devdocs for several libraries I use) and it's nice to have local copies of those instead of googling every time.
Surprisingly, the full ~130 GB Wikipedia dump works fine on a regular Pi Zero 2 with 512 MB RAM. I don't know how ZIM works but it does work very very well.