1. Tying Cables
2. Tying things to other things _quickly_ : Think of how much time you could save building a shelter using cable ties instead of cordage....

I really think they are the modern-day equivalent of baling wire. Most useful are the UV-resistant black ones, in 8" length, ~40LB hold. Just my opinion...and I BDC (backpack daily carry) around a hundred or so.
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Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, a critter that can be killed but can't be tamed. --Robert A. Heinlein