To prepare for a disaster, you’ll want to build a kit of essential supplies. Personal Preparedness Go-Bags should contain a minimum of 72 hours’ worth of essential supplies, including emergency water, food, medications, phone charger, blankets, lights, a dust mask or N95 mask, and copies of important documents that will help you get through any situation. Home Preparedness Kits should contain a minimum of 7 days' worth of emergency supplies. Vehicle preparedness kits should contain a minimum of 24 hours' worth of emergency supplies. Sonoma Ready. Sonoma Strong.