I love this concept, I just really want one with an e-ink screen instead.

I think there's a great niche for "embedded" devices around the home -- weather readout panels, lighting controls, music player, intercom, etc. -- but glowing rectangles mounted to the wall are just too... glowing. E-ink panels is where it's at, and a Raspberry Pi powering it is perfect.

Unfortunately, the only real general-purpose e-ink tablet I'm aware of is the Boox, but their models are all $400-800, which is way too expensive (when similar tech in a Kindle is $80).

All I want is a relatively low-power, low-memory, low-storage touchscreen e-paper tablet (i.e. specs of an old Kindle) that I can run Linux and a WebKit browser on.

And I want them to be cheap enough in bulk so that other companies and startups can build home devices on top of them to resell.