+1 for Libby. Also shout out to Z-Library, Library Genesis, and the Internet Archive for all the book epubs and pdfs you can find there

I’m using it currently on a Pixel 7 Pro on GrapheneOS on Android 15 with no issues if that helps

If you’re looking for a reasonable FOSS swipe keyboard, try AnySoftKeyboard. While still a step below the non FOSS keyboards I’ve used before like Swiftkey, it gets the job done reasonably well

New New Mexico and Old New Mexico

What about an Android tablet running a custom ROM without GApps flashed, and an adapter for HDMI? There’s a handful of widely sold tablets that also have a decent development scene and are cheap second hand. Check XDA forums for various models before deciding which one to get