Also, closer related to the topic. I've just laid
my hands on a Minec
1000, a pretty awesome terminal depicted here:
Hmmm...Now I remember...HP-95LX / 100LX / 200LX / 1000CX are CHEAP
PC-XTs running at 7 MHz that you can use in your pocket...and has a serial
interface :) I even have one myself! :D