Think metaphorically. Around you are people with money who have to do odd jobs they don't like. If you're willing to do that work, they will pay you for it.
It doesn't have to be skilled. Think shoveling dog poop http://www.azcentral.com/ent/pop/articles/0420doody0420.html . If you can't find an equivalent where you live, you either live in a paradise where no one has annoying chores, or you aren't looking very hard.
I think kind of by definition poor people don't have much money to spend on luxuries like having someone scoop their dogs' poop. Though, where I grew up there were lots of people with money who had odd jobs that they didn't like doing themselves. You could be a drug dealer, the muscle, a lookout etc. But it's not like people don't know this, they just don't want to be arrested or worse.
It doesn't have to be skilled. Think shoveling dog poop http://www.azcentral.com/ent/pop/articles/0420doody0420.html . If you can't find an equivalent where you live, you either live in a paradise where no one has annoying chores, or you aren't looking very hard.