I can’t believe I’m saying this, but if you can find a cheap MacBook m1 (I have one for work and I hate it) might be OK for this. Get a stick on key cover for it. The only thing that is great about it is battery life, like 2 days with moderate/heavy use. Set up an remote client to connect to your machine and use it that way. Screen is great, only openings on it are usb-c ports and the keyboard.
R