This one is nothing fancy, but it fit our workflow well. My SO has always saved recipes to a pinterest board - normally she brings a laptop to the kitchen and sets it up on a chair.
We finally took this tablet (came from corporate ewaste) and stuck it to the wall. It's too old for most apps but it seems to work well for this. We installed pinterest, and a podcast player. Eventually I'll check if there's a good replacement OS for the expired android version, but I figure we'll do a bit of a trial run, see how it's working for us and what we need, before starting with that.
That implies Android. There is a FOSS app that requires AOS 4.0 or greater which cuts off the charging when the battery reaches a user-specified level:
http://fdroidorg6cooksyluodepej4erfctzk7rrjpjbbr6wx24jh3lqyfwyd.onion/en/packages/com.slash.batterychargelimit/index.html.en
I would generally suspect that app to require root, but there is no mention of a root access requirement.
EDIT: just tested this and indeed root access is required (#fdroidBug). So @JacobCoffinWrites should root the tablet to extend the battery life.
I'd been thinking about replacing the OS with a supported open source one anyways. I'll check out the xda forums and see what I can do, it'll be good practice for if I ever want to do the same with my phone.