collect a variety of other things along the way, but pay attention to how much you put in the bag because they can get really heavy really quick.
i also take my kits one step farther by trying to stock one kit for each person in my house and another in my car, that way, even when i am away from home, i know i have at least a three day kit nearby. i also always carry a small pocket knife with me and will probably add some sort of survival key chain to the mix at some point so even if i cannot get to my kits, i am not 