Corkscrew. For the wine bottle.

Atually, that was the first thing I mentioned when I started this thread, but it's okay to repeat that often.

lol - surely with a survival blanket for shelter and a hip flask you've pretty much covered the bar room equipment group - and once you've got that far you probably won't want to be resuced

Sorry Benjamin I didn't catch that in your post - it was a busy day yesterday. <img src="images/graemlins/shocked.gif" alt="" />

Hey, no problemo, and I will say it again, the most important thing you have in a survival situation is what's in your cranial containment vessel.

The Brain factor.

A knife can access the blood of animals, the innards of certain plants that contain liquid, as well as dig into a dry creekbed looking for water.

Bountyhunter

The container may be more helpful for gathering water than the knife. You could still improvise some tools for digging or accessing plant inards when you don´t have a knife. BTW drinking blood when you don´t have water is a bad idea. It increases your need for water.
I still think that it would depend on the situation which tool would turn out to be the most important one. My only hope would be that have it when it´s needed.

Camelworld

Looks like you have a thing or two you can teach !

Communication unit: so far it is mobile. Hope to add satellite as soon as I have enough money not to worry about its fast price depreciation.