When I was a kid I always needed a survival tin. Nothing fancy, just an old tobacco or Altoids tin with some matches, cord, wire, ductape, band-aids, safety needles and a "survival ration" (read: some candies).
Besides that I would add to your list a whistle (already mentioned) and a spork or something similar (already mentioned, too) and a small flashlight or cheap headlamp. But as you go out camping I guess they have something like that already.
Besides that I would add to your list a whistle (already mentioned) and a spork or something similar (already mentioned, too) and a small flashlight or cheap headlamp. But as you go out camping I guess they have something like that already.