In our preparedness materials, we typically push all the disaster supplies to be stored and rotated, starting with one gallon of water per person. Forget the supplies for now. I think for the economic welfare of our citizens we should be strongly advocating for property insurance. Starting with fire insurance, which is required if you have a mortgage, but then also the special hazard insurance. First for flooding and then also for earthquakes.
It is the loss of a home or business that will devastate a family for years to come. When someone loses a home that did not have insurance to protect its owners — the average family is doomed. I've heard all the objections to special hazard insurance: cost, infrequent disasters, etc. Hey, death only comes once in a lifetime, yet people seem to have that insurance!
I have to admit I'm an insurance junkie. Of all our financial decision points for the Holdeman family, insurance has always had a lead position. Call it a peace of mind measure and then there is "leading by example!" lastly, I recommend sewer backup insurance. It is really cheap and not something covered by your normal home policy. If you need it — you will like having it!