We carry blankets and sleeping bags, usually some water and snacks, paaper towels, TP, etc
Came in handy earlier this year when a land slide closed the road with my wife on the wrong side from home. She spent more than 30 hours in her car waiting for the road to clear. Torential rains, but she was also near a convenience store with restroom facilities and coffee.
She wouldn't have made it without the coffee........