Thank you so much for this question! It reminds me that I need to update my emergency supplies!! I keep a pretty good stock of emergency stuff in my car's trunk, and also another supply inside the house. I do have most of the following, however a couple of these things I do not yet have, and your post of this question has encouraged me to go out & get those things, so I do appreciate it so much!!!
Water - I have read that there should be one gallon per day for each person.
Freeze-dried food, trail mix, peanut butter(this last item is my own addition)
Canned foods, evaporated milk and can opener
Paper plates, cups and plastic utensils
Trash bags - plenty of them
Buckets - in case no access to bathrooms
& Toilet paper - plenty of it
Hydrogen peroxide, neosporin, bandages, gauze, bandaids,
Aspirin, tylenol, motrin or other pain relievers AND Prescription meds
Masks (paper...can get them anywhere, even 99 Cent Store)
Flashlights(water-proof) and extra batteries
Battery powered transistor radio, extra batteries
Blankets, Jackets, and extra clothing, sturdy shoes, towels and paper towels
There are more things probably that we should all keep on hand, but I think this covers most of it.