Either a Leatherman Juice CS4 (I like having scissors and pliers at work) or an Opinel #7. Used to carry a Wenger swiss army, it's somewhere in a creek near me...also used to carry a Gerber Nautilus. Weird multi/ swiss army ish knife, but it had a little light built in that I like. I don't carry it much anymore, the Leatherman is a better fit and the Opinel seems invisible in my pocket.