I hope asking a question about Wikipedia is not against the rules, couldn’t find nor confirmation nor contrary in the sidebar.
I have a PocketBook reader that doesn’t support Kiwix. Would need an EPub or another primitive text format. I know a tool to save an archive on epub exists, but no already packed thing with a top 50000/100000 collection.
If you can run Python code off GitHub on a computer, I’ve never used it, but this tool on GitHub purports to do that. Hasn’t had any commits in the past three years:
https://github.com/jonbirge/briki
This one apparently lets one convert one or more WP articles to a .epub, and is getting commits:
https://github.com/hauke96/wiki2book
This one updated 10 months ago
https://github.com/NossairErrahmani/wikipedia-epub-compiler