The earliest generation Kindles had keyboards and various ways to run Linux. I think they tick about every box in this concept, except for the "Great keyboard.

The earliest generation Kindles had keyboards and various ways to run Linux. I think they tick about every box in this concept, except for the "Great keyboard. Terminal mouse support": the keyboards sucked for typing more than a few minutes. I realise that this is a pretty important "except" if you want to use a terminal, but at least they were actual mass market products.