
The Juicebox is a cheap (under $25 in some stores) music, video, photo viewer from Mattel aimed at kids. There are some hacking projects going on, and we’ll have some articles on that soon, but here’s a good how-to on putting ebooks on one using JPEGBook which makes images from text and you view those on the Juicebox. Link.
Rather than Jpegbook, try PDF2PSP (http://pdf2psp.sourceforge.net) – it has applescript support so you can actually use it as a “printer driver” on the Mac.