To place a listing in the classifieds, use our automated service, where you provide a short description, contact information, and a price. Note: Do not put a Dollar sign ($) in front of the price in the “Price” field. The want posting system does that automatically. Please put a WTB, WTS, or WTT in front of your ad title. (Those stand for Want To Buy, Want To Sell, or Want To Trade.) You will also have the option of including up to six photos of the items listed in your ad. Then, it is up to you to handle inquiries directly. Like newspapers, SurvivalBlog is merely a conduit for connection and does not vet these items, advertisers, or the buyers. Remember, SurvivalBlog is a family-friendly site and the ads must fit within its parameters.
For global catastrophic risks the costs of food storage become impractical for most of the population  and for some such catastrophes conventional agriculture would not function due to the loss of a large fraction of sunlight (e.g. during nuclear winter or a supervolcano). In such situations, alternative food is necessary, which is converting natural gas and wood fiber to human edible food.
Car electricity runs on direct current, but almost everything else is alternating current. What you need: an inverter. Some cars have them built in, but you can get one at a store for less than $40. Use the clamps to attach the inverter directly to the terminals on your car battery. Let the car run at idle and you have 110-volt AC power for as long as you have gas. With a 300-watt inverter, you'll have enough amps to run a laptop or even a television.