Relatively new - hopefully the crowd will grow - but a lovely place to show/sell with good food and music.
Piety Street Market
Piety Street Market is held monthly at the corner of Piety and Chartres Streets in Bywater, New Orleans. It is a mix of craft artists, flea market, food, and music. Dates do change, so check the web, but it is usually the fourth Saturday of the month (sometimes Sunday).
They don't seem to have a web site yet but I am linking to their facebook page.