As you can see, I probably pack a lot more than I need. The pack only weighs 8 lbs, though, so I don't even notice the weight. If I ever need it there's a good chance that I'll be walking several miles to get home. There's a very big network of green belt trails in my city which I plan on utilizing if I happen to be in town when something happens. If I get caught outside of town then I might have to live out of it for a day or two. Here's a rundown of the contents:
The bag - It's just a generic backpack with a hydration bladder. I don't remember where I got it. I just had it and everything fit so I've stuck with it. I prefer civilian gear to paramilitary style gear.
Water - My water solution for this pack is a Platypus 1L Hoser hydration bladder and iodine tablets. I can also boil water in the pot.
Food - The cliff bars are convenient. The 1L pot has a folding handle that locks down on the lid. The altoids tin is an alcohol stove. Take the lid off and it fits neatly into the esbit stove. I keep a few esbit tabs in the stove for backup/firestarters. There's also a small bottle of everclear for the stove. Why a cooking setup but no food that needs to be cooked? For day trips I can throw in a backpacking meal or two. I can also use it to cook up some wild edibles if I get sick of Cliff bars and decide to do some foraging.
Fire - Between the strike anywhere matches, a bic lighter and a magnesium bar I should be able to get a fire going. The knife has a firesteel in the sheath, too.
First aid - My first aid kit is pretty bare bones. I've added some things since taking this pic. Basically, though, it's just medical tape, gauze, small bandages, small tweezers and moleskin. I can also use the everclear for disinfecting.
Shelter - The idea is to get home not to go play in the woods. If worse comes to worse I can use the poncho and some 550 cord to cobble something together. Throw in the emergency blanket and I should be fine... as long as it's a beautiful summer evening.
Lighting - I've got a small pen light and a xenon with a spare set of C123 batteries. I should probably throw in a headlamp. I keep one in my car, though, so if I really think I'll need it I'll have one.
Miscellaneous stuff - Duct tape, 550 cord, a cheapo fixed blade knife (a real piece of shit that I must replace soon...don't buy cheap knives unless it's a Mora), some kleenex, pencil and a small notebook (not in the picture), a small mirror, sun block, one of those compass/whistle/matchbox/signal mirror 'survival tools', some body warmers and a couple of waterproof bags round out the rest of the kit.
If I get stuck on the other end of town and I have to hoof it home this should cover me. If it takes longer than expected to get home or I can't go directly there then a little ingenuity should get me by for a day or two. Besides what's in the bag I'll also have my EDC on me (Keltec P3AT, CRKT Urban Shark, Gerber Clutch, Streamlight Stylus Pro and whatever is in my wallet). Anyone have some other suggestions?