I've not heard of anyone doing this yet, but you give me an idea. What if we built an automated one gallon brewer based off of the coffee pot brewer instructions, but put it in a pc case. Perhaps even automate the process so it gets air when needed, temp control, the works. The only thing that would be hard to automate would be racking.
To the drawing board!
PS - what reasons would you have to make this stealth? I'm more interested in the novelty.