Lots and lots of videogames.
Movies she doesn't like, really loud. Preferably anything with John Wayne.
Loud things in the garage at odd hours, air tools, etc. Cleaning triumph carbs, listening to Zeppelin, and drinking bourbon at 1am on a Tuesday.
I cook things she doesn't like, or I get take-out that she doesn't like, etc.
Kind of nice, actually, although I wouldn't want to do it for any length of time. Just a couple days.