I also will bump the rope. Charlie Bronson's always got a rope!
Another excellent and often overlooked item is the steel mirror. Groom yourself, look around corners or obstacles while keeping your cover, use it to signal for help when there's sunlight, and maybe even bounce back a gaze attack.
Oh, and the crowbar! Very helpful if you need to open something and you have a party where almost everyone dumped strength (which happened to one of my groups once). Also useful as an improvised weapon.