I wonder whether I could find PADD (Personal Access Display Device) from somewhere.
Tablet devices do not match the category because they're focused around consumers and they are bit heavy. I'd expect those color e-ink displays would work. But I can't find anything that'd have been designed for open software stack or people who actually do things.
Here we have a strong doer-culture in raspberry pi forum board. I wonder if you'd have seen a PADD by some manufacturer yet? It's bonus point if it comes with LCARS but anything else is fine too.