Looks interesting and is called the beepberry/beep. Looks like a rpi0 with a addon that has a paper screen + qwerty keyboard.
Some articles about it:
https://www.theverge.com/23727218/beepberry-cyberdeck-mini-computer-raspberry-pi-beeper-messenger
https://www.jeffgeerling.com/blog/2023/messing-beepy-formerly-known-beepberry
I’ve had my eye on the GeminiPDA for a while. It’s close to what I would want but not quite. Good suggestion.
The UI of the Pawnagatchi is nice.
Yeah. It seems like what you want is a mobile linux os with an old school desktop skin which you can def find and configure. Just check what arch they support and if they don’t officially support you can probably find docs on compiling the proper kernel with necessary drivers.