Cash can easily and very quickly become useless in a number of different scenerios.
Here is a list of some items you might not have thought of that make good barter items and, at the same time, are useful to you.
32 count Strike anywhere matchbooks. One person found them for 120 boxes for $20 on ebay. You wouldn't even have to barter for a whole box, maybe just one or two matches.
Cartridges 22LR and whatever size you use yourself
Candles at 33 cents each for 15 hour unscented white votives on [url]Candledepot.com[/url]this is a good deal
Calcium hypochlorite (pool shock) 1 lb bags cost just $3.50 and will make roughly 12,000 gallons safe for drinking.
Seeds packets are perfect size and weight and have a long shelf life
2 cycle motor oil in pre-sized bottles good for chainsaws and other small machines
Rechargable batteries especially if you have a solar recharge unit you could have an instant new business
Nails and wood screws lots for people who are repairing or jerry-rigging things
Thread, straight pins, needles and safety pins Lots of repairs will be needed in the future and another new business if you like to sew
All food for thought. Hope this sparked some of your ideas and you'll post them on the blog Elizabeth