Sustenance will be key, especially if a natural disaster stalls accessibility to running water and the grocery store. According to Ready.gov, it's recommended to have enough food to last you for 72 hours and a gallon of water per person for at least three days. If you don't have enough space to stash gallons of water, consider getting Lifestraw, which can filter 1,000 liters of contaminated water. Some smart food sources to store include nuts, energy bars or dried and canned fruit (just don't forget the can opener). Also, don't forget to put aside enough food for your pets, as well as any formula for babies.