Contractor's bags are great, Les. You can do so many things with them. I keep one or two in most of my kits. They make an instant dry patch of ground, you can cut em and wear em, stuff em and lay on them, cut them and make a roof out of them, you can make water potable with em if they're clear, you can carry stuff in em, wrap stuff with em, make signal flags and trail markers, etc., etc... I'd put them right up there with the bandana.