An Android tablet would also do, since there's a lot that can be done with Termux, but I'd much rather have a "real" Linux device.
Seeing a keyboard like this one[1] makes me wish I could get some sort of origami fold out dock for a tablet, that would be so cool I'd have to wear shades indoors.
[1] https://lemmy.world/pictrs/image/75acdf98-6bb5-4d5b-8dd5-a87...