I keep a "Get Home Bag" in the trunk of my car. I live in the San Francisco Bay Area and my job is 17 miles away and across a major bridge from my home. If there was a major earthquake or SHTF situation while at work, I might be stuck or need to take a long and time consuming detour to get back home.

This is what I have in a backpack in my trunk

• 2 liters water
• 6 Cliff bars
• Package of 18 survival bars with 200 Calories per bar
• $100 cash in small bills
• Knife
• Leatherman multi tool
• Spork and USGI can opener
• Coleman first aid kit
• Small bottle of ibuprofen
• Flashlight with extra batteries
• Frogg tooggs rain poncho
• Pepper spray
• Lighter
• Paper map of the area where I work
• Notepad and Pens
• Extra pairs of contact lenses and glasses
• Small toiletries bag with toothbrush, toothpaste, contact lens solution, etc)
• baby wipes
• External battery charger for iPhone
• A few snaplight glow sticks
• Leather work gloves
• 10oz flask filled with 100 proof bourbon

Also in my car's trunk is 6 additional liters of water, a blanket, change of clothes, pair of sneakers and extra socks, some canned foods, jumper cables, etc.

I'd love to keep a handgun stored in my trunk but don't think it would be a great idea for long term storage.