Consider working for Deano’s through the 
Deano’s Pasta in Somerville is looking for a Farmers Market Representative. From their site:
Car required. You would pick up supplies from our Somerville, MA Pasta Shop and then drive to a farmers market where you would be selling our pastas and sauces from coolers. Hours available are Tuesday and Thursday from 1:30-7:30 and Saturday and Sunday from 8:00-3:00. Must be comfortable lifting up to 50 lbs. The markets run until Nov. 1. This is a fun and flexible job perfect for friendly and reliable people. We pay during travel time and also pay mileage as well. If interested, please respond with your availability and please email Hala@DeanosPasta.com for more information or call our pasta shop directly at 617-623-0013 and ask for Hala