Wow that is crazy that it runs Linux and is less than $3, that guy would put the executives from the scene in American Psycho to shame with that business card.

What I had in mind was a program with a GUI that had text, some images and you can click through the pages and maybe do something else. I suppose you could pull off something similar to what you linked with a compact arduino-type device, some kind of flat 5v battery and maybe an e-paper display that you can print scrolling text to and maybe a little graphic. I suppose not very similar to what you linked, but would be cool in its own right