Coffee’s not a bad idea. I’ve seen how my friends get without their morning coffee and when we had an ice storm a while back, that morning (only a couple hours mind you) the line at the local supermarket for hot coffee was unbelievable.
Caffeine withdrawals are not a pretty sight.
Besides, coffee goes on sale regularly and the stuff in the cans keeps great, especially if frozen. It wouldn’t be hard to be stocked up on it. And besides, even if the quality is a little off, anyone that desperate for coffee won’t care anyway.
A good thing would be to be ready to stock up at a moments notice, too, and that means having cash on hand. Sure there may come a time where cash isn’t worth much, but that isn’t likely to happen instantly.