Skyrim and Oblivion. Whenever I start a sneak-thief, I head for the nearest inn, hunker down behind a chair somewhere in the farthest corner I can find, and set myself to auto-walk with my head butting against the wall. I weigh the W key down and unbind the neighbouring ones temporarily. Then I unplug my speakers and headphones, turn my monitor off and head to bed.
Six hours later, tada. Master Sneak is in the hizzouse, with its corresponding bunch of perks and/or experience points to invest.