On your person

[JD1]

When i'm at work I carry a Leatherman Fuse (with locking blades) on a pouch on my belt. I can justify the locking blades due to the nature of my work and the other tools are all extremely useful. At all other times I carry a small Leatherman Squirt (non locking blades and about as inoffensive a multitool as you will find) in my pocket.

If I have nothing else on me at all (very rare) then at least I know I can rely on the Leatherman.

Not forgetting a disposable lighter as well, life wouldn't be worth surviving without a roll-up or two, and it also has the obvious use of lighting a fire to purify water, provide heat, cook etc