That is a very fine fundamental list, but I am enough of a desert rat that I would add water (or at least access to a certain source).
Good call Hikermor. Water is life. I'm rarelly without a bottle close at hand. I carry a litre or more in a ss bottle, depending on how far off the beaten path I'm going. Along with a bandana and micropur tabs I'm usually set for refills around here. I also keep a military mess cup in some of my kits.