Me being the kind of person that I am, whenever I daydream up a project, I inevitably wind up making concept art before doing any of the real work. This is, of course, not definitive, but it's more or less the look I'd like the system to have; something like the many wood-encased homebrew systems built by hobbyists back in the '70s. There'll probably also be a slot for the MicroVGA board in the back, in addition to the serial ports proper.
These images were created using Moray 3.3 and POV-Ray 3.1. The base model for the keyboard was obtained from this site. You know the drill; click to make big.