microprinter wiki. “Hackers across the country are buying up old old receipt printers and imaginatively repurposing them into something new. We call them microprinters.” The CBM 231 is the most common model, and is currently selling on eBay for $20 or so. Something a bit smaller would be fun for travelling with.
Sign in with 
OpenID
That's pretty cool... all the wasted paper is kind of a bummer, though.