Wow. It is far too hard to only narrow down five items. First of all if you count food and water then you must also add a can opener and a water purifier. Then one would need matches, tarps, seeds, knives, crank powered flash lights, compass, plant guide book, medical guide book, gas mask, first aid kit, and mylar blankets just to begin with. Take away any of those and narrow it to 5 and you might as well go ahead and die.