Los Olivos is a charming town with wineries and good eats. Try a Santa Maria - styled tri tip sandwich at Los Olivos Grocery, a cold one from Figueroa Mountain Brewing Co, or a flight from Carhartt Winery or Fess Parker.
An hour from the Buellton/Solvang area is Downtown Santa Barbara - tons of Spanish architecture, good restaurants, and shopping. Try Crush Cakes.
Take a stroll at Gaviota State Beach - bring a jacket, it may be chilly.
Silly but fun! Take a break at Ostrichland and feed the ostriches and emus.