There is a Famer's Market in Coppell. This will be its fifth year of operation. It is located on Bethel Rd, or Bass Pro Rd if you are coming from Grapevine, and Coppell Rd, about a mile or so east of 121. I've heard they are opening next week but I don't know if that's certain or not.
In the past they've had fresh produce, meat, seafood, cheese, bread, pasta and herbs.