The list left out bleach. When a storm hits and water supplies are down, you're screwed if you don't have potable water. Just a few drops of bleach for every liter of water is enough to kill most water-borne pathogens.
I don't have a bug out bag because I'm not that hardcore, but I do have the three C's with me everywhere I go. That's Cordage (550 paracord anklet), a Cutting tool (Swiss Knife) and a Container for water (32-ounce Nalgene bottle). This plus a small first aid kit--it's just a small lock-and-lock box with basic supplies and my weed. lol