everything listed is good, but too many items for my practical everyday use. I can survive on what I carry all the time:
1 knife. Usually two knives. I always carry the Stiff K.I.S.S. It's mounted in its sheath sideways next to my belt buckle. Can draw it from any position that gets my hands in front of me at waist height. One handed draw and re-sheathing. Part serrated blade can make an instant job of cutting rope, webbing (like a seat belt), brush, opponents, etc. Also always keep a one hand opening clip folder in my rear pocket.
2 fire starter. I keep the magnesium/flint bar type on my keychain. Short piece of hacksaw blade taped to its side to make sure I am never seperated from a steel edge to shave the magnesium and make sparks.
<3>Gerber plier tool. It can be opened and closed (to the plier position) with one hand. Has everyhting nescessary for emergency tool use and it's very durable (Really. I was trapped between floors in an elevator at a stadium once when electricians working on the electric decided to disconnect the main power and then go to lunch. I was able to disassemble the door from inside and squeeze out between the floors).
Not quite all the time, but usually when I'm in my rugged clothes (as opposed to sunday go to meeting clothes)
Rappelling/evacuation belt (I like the Wilderness instructor belt. It works well as a gun belt as well and looks nice for regular wear in place of your leather pants belt)
Rapelling/rescue line (usually 50 ft) 1/4 inch (or 8mm)
Mini figure 8 decender (SMC escape 8).
Extra long heavy duty laces in my boots (tourniquets, emergency prusik, etc.)
I admit it's not totally comprehensive, but it can provide the resources needed to cope with just about everything, and it's not something that's in the way or difficult to carry. I think I'll add the suggested emory paper to my wallet. I can see several uses for that, including polishing an aluminum or steel can or scrap to make a signal mirror.