I have a friend that did very well as a chef - she got started through a friend and worked her way into nicer restaurants. She had no formal training.
When I used to tutor for test prep, the only qualification was a test score in the 90% percentile. They paid about $20/hr plus prep time and mileage, plus bonuses for good reveiws/problem students. Most people were in college, but one girl passed everything from the MCATs to the LSATS after getting in on her SATs and she had only graduated HS. They really didn't care about level of education as long as your students got good scores. Really if you can teach anything - swimming, dance, academics, you can market that.
My brother is doing great now - he opened up a dog walking service that has expanded into a doggy day care, babysitting and walking service. He specializes in "tough" breeds that other businesses don't want to deal with.
If you can get started and photograph well - my friends who model get about 50/hr - but it's hard to get regular work. If you are willing to pose nude/erotic that helps. It may be less uncomfortable than porn.
Or network like crazy, find a spot where you can talk to lots of people and find out what they all do, and see if you can use their ideas or if they might have a need for you. Some admin positions are pretty good, it helps if you meet someone who can get you in the door.