Little Debbies Nutty Bars, my personal favorite. a metal drill size gauge, usually about 5x7 from 1/32" to 1/2" by 64ths. sharpies in several colors, levels from 3" to 36", magnet on a stick to rescue the screw that just dropped behind the bench, 18" and 36" T-square, hand towels or wash clothes for cleaning and dusting, bottle of rubbing alcohol for cleaning, sanding sponges(great for contoured surfaces and you can wash them and use again), $10 digital multimeter.
Scott, just a tired old sailor
see my knives and woodwork here