"The Redfly Mobile Companion from Celio is a mini notebook-size device that effectively serves as a hand- and eye-friendly shell for Windows Mobile smartphones. It has a larger, relatively standard keyboard so you don't have to thumb type and an LCD screen measuring eight inches in diameter. Connect the Redfly to the smartphone and the data going to and from the phone shows up on the larger screen instead." More - http://www.celiocorp.com/products.php

Looks like another company had Palm's Foleo idea. Not quite sure about the graphics, but I reckon it's a market to be tapped - pretty useful things if done right.