Humans need 4 basic things to survive – water, food, shelter, and warmth. A 72 hour kit should, at bare minimum, include the following items: 1 gallon of water per person/per day, 3-day supply of non-perishable food, extra clothing/blankets, prescription and non-prescription medicine, first-aid kit, Battery or crank powered radio, tarps and duct tape, flashlight, cash, toilet paper, personal documents/important information