With out a doubt, my vote is the Farmer's Market.
I love my job at the FM. It is a happy place. I make chicken, tuna, potato salads, fruit salsas, fresh salsa, whatever I feel like making. I have loyal customers that buy unusual things I come up with because they trust me. The vendors I work with are all nice people. It is like an extended family. There are things like health permits to deal with, but if you know people with commercial kitchens, it would be fine. You could do prepared foods or prepare food at the market. I have sold salads, soups, salsas, pickles, burritos, bowls, etc. Whatever I feel like making. Hummus is a good seller too. You can be as creative as you like. It can be quite lucrative especially if it is a big market.