I'm leaning towards a Samsung A7 flashed with LineageOS and I may try to use FullyKiosk again. I just really hate the idea of using an Amazon or Google OS. I would build a raspberry pi / touchscreen system if I had the time.
How important is the battery concern? I've read it's an overblown worry for modern tablets.
I'd be curious to see this symbol replacing the hand in the previous thread's eye and palm.