After an emergency, you may need to survive on your own for several days. Being prepared means having your own food, water and other supplies to last for at least 72 hours. A disaster supplies kit is a collection of basic items your household may need in the event of an emergency. Most of the items are inexpensive and easy to find, and any one of them could save your life. Once you take a look at the basic items, consider what unique needs your family might have, such as supplies for pets, or seniors.