I would carry some changes of clothing, grooming supplies, snack bars, water, cash, some important papers, a 22 rifle with ammo. In my case I would be heading to relatives away from the danger area. A quick leave from one's home does not allow a lot of stuff to carry along. Oh yes, forgot, my family. Keep it simple. Whoops, forgot my flashlights + batteries, chargers, as many as I could gather.
Bill