Let's say I don't want to be a self-sufficient farmer after the apocolypse

What else can I do to sustain myself? Give me some ideas, they don't have to be necessarily good or easy ones. I'm not talking *right* after, either. I'm talking when the dystopias pick up, several years down the line after things have settled down. (Ever notice how these books always assume that if you survive the initial upheaval of life as you knowing suddenly grinding to a halt, you'll be all right?)

(And yes, this entire post assumes the end of the world as we know it is coming. If you don't think that's likely to happen, speculate anyway.)