Big Mama's Hula Girl Gallery has a wonderful, diverse and fun collection of artwork by a variety of artists. It's on 283, north of 30A next door to the Sherwin Williams paint store.
Also, Chick Huettel at Bayou Arts & Antiques is a wonderful artist - mostly oil & acrylic, some whimsical, some serious. Well worth the visit. When you're there, be sure to visit the small chapel and pet cemetery. Highway 395 in Old Town Santa Rosa.
And, last but not least, House of Art in Grayton for works by Gordie Hinds. They're on DeFuniak St, south of 30A.