Debian in the sunshine?

[Hendrik Boom <hendrik@topoi.pooq.com>]

I'm a long-time user of Debian, and also have an e-paper ebook reader.  
It occurs to me that something like a Debian laptop with an e-ink screen 
would be extremely useful, for, say, sitting on a sunny back porch in the 
summer and programming -- a situation where the normal luminous screens 
are a complete washout.  No, I don't expect to be able to watch videos on 
an e-ink screen.  But the kind of (non)dynamism that occurs when editing 
code in emacs should be easily achievable.

Anybody know of any hardware that could be used (or, if necessary, 
abused) for this purpose?  Preferably with bog-standard Debian?

-- hendrik