There are little things that everyone should do. If you live in a place where an earthquake may disrupt tap water, keep some water in your house. If you live in a very hot place, keep some water in your car. If you live in a place where it gets very cold, keep some blankets in your car. Have some flashlights and a battery powered radio, a fire extinguisher and a first aid kit. You don't have to be planning for the end of the world for that to make sense.