Just read the boook "World Made by Hand" (not a bad read). It is about a post-peak oil world. One thing that it mentioned was opium poppies to make laudnum. That might not be a bad thing to grow. We tried to grow them in a greenhouse business we ran but you aren't allowed to sell the plants in the U.S.. You can sell seed, buy seed, or grow the plants-you just aren't allowed to sell/buy the plants. And they don't look different from ornamental poppies. If everything breaks down, some sort of pain medication would come in awfully handy.