I saw several FB posts re Raspberry Pi, which is a small Linux processor ($25 or $35) that has a 700 MHz processor, 256 MB of RAM ethernet port, usb ports (depending on which model you get), an audio/analog video outputs, and SD card slot. The goal of the project to get people engaged in programming. You can write programs in Scratch or Python. For more information, please visit their FAQ page.
I found this video on how to set up the pi:
Ponnuki shows how to use your Kindle (e-ink) as a display here.