I always have at least one blade on me at all times. The list James had pretty much mirrors my list. There are many uses for my job that get added as well. As an Army Food Inspector I use mine constantly and I spend most of my time supervising. Most of my young Soldiers don't carry a knife and I can't understand it. All my Commanders have known that if a knife is needed I'm the one to ask, even in PT uniform. I've even used it to field dress a feral hog when hunting. The only time I don't have a blade is when flying, then it is in checked baggage.

YMOS,
Tony