survival kit
From Longman Dictionary of Contemporary Englishsurvival kitsurˈvival kit noun [countable] a set of things in a special container that you need to help you stay alive if you get hurt or lostExamples from the Corpussurvival kit• There should be a survival kit of some kind, and a first-aid box.• We knew he'd taken a survival kit and space blanket on his trip, and that knowledge gave us hope.• I had memorized those few facts widely accepted by Princeton undergraduates to be part of an investment banking interview survival kit.• Last week we picked up a necessity for your survival kit, a program called PKZip for Windows.