The system monitor has been in place for a while, however it was headless, no monitor or keyboard, only remote desktop access. There have been occasions that I have needed to work on it, and its a bit of a pain to remove the unit, bring it into the house, find a keyboard, monitor, and mouse and hook it up.
Now I have a complete mini setup in the shed. The little black box is the PC. The keyboard is mini.. roughly 12" wide with an integral track ball. The monitor is a Lilliput 9.7" LCD 12V.