I do keep a bag. Actually it always turns into several bags, but mostly I focus on travel in the car. My wife can't walk much over a couple of hundred feet, if that. So I take what I'd want in a shelter. Stuff like soap, towel and washcloth, meds, couple of days change of clothes, toothbrush and toothpaste, etc. And food for the dog. The shelter might feed us, but probably not the dog.