i had to share this. Its not an emergency to me but it was to my wife. She had just colored her hair that day and needed a shower cap to do something so the affect wasn't altered. She was bummed until I pulled one out of my EDC kit.

Why a shower cap in my EDC? I take shower caps from hotels (in the tight little package the size of a condom) because they are essentially zero weight vapor barriers that in a pinch will hold in heat on my head if I suddenly get stuck in a rain/cold situation. I have them in all my camelbak and trail running packs, my bike tool kit when I wouldn't have my normal EDC kit on me for workouts.