I’ve gotten my hands on small ARM development board with a LCD touchscreen. It’s a nice piece of hardware, has serial, ethernet and runs on 5V. I’ve gotten the toolchain working nicely on another box (since you really don’t want to compile anything on a 75MHz ARM box with 16MB RAM). Works fine now, and I’m happy, and I hope the owner will be so as well.
I really want to get my hands on one of those boards permanently – there’s a lot you can do with such a small unit which should be able to run on batteries fairly easily.