hate the corporate feel of the change, but I'm glad the little company with a quality product is having so much success.
When my siblings and I were little we would drive up to Monterey with my dad and visit the Monterey Bay Aquarium, one of the more fantastic aquariums on the coast. If you're making this journey I suggest taking the 101, but cutting over to the 5 around Salinas. The 101 is a twisty road and if you're prone to car sickness you will be hit. The views either way are quite beautiful, but watch out for airplanes- they're usually checking your speed and radioing cops on the ground!
I camped at Point Mugu during one spring break in high school and every sunrise and sunset the dolphins would swim along the shore through the waves. While I enjoyed the experience immensely, the campground didn't have very good (or very many) amenities, so be prepared to be a little dirty and use some port-o-potties. Whether you’re sleeping in a tent or under the sky, I recommend bringing an air mattress or one of those full length lawn chairs that folds open flat because sand is harder to sleep on than concrete!
I used to go to Mexico with my dad, before the drug wars between the cartels became so pronounced and so dangerous. My dad found a metalworker named Julio somewhere along the main road between Rosarito and Ensenada. He had a beautiful talent for designing wrought iron. When we commissioned pieces for him we would bring him the drawings and then go eat delicious tacos at one of the local stands- where they still serve coca cola in the glass bottles and it’s still made from real sugar cane- and then wander through the open air market. I have a beautiful turquoise pendant my dad bought for me on one of our trips. On our way back to San Diego we always bought churros from the vendors that scurried in between the traffic at the border.
If you are a bargain shopper there are three major outlet malls along the west coast of California: the Las Americas outlet, which is the last exit off the 5 before you hit the International Border, the Carlsbad Premium Outlets, also off the 5 at Palomar Airport Road in North San Diego, and the Camarillo Outlets off the 101 on Ventura Boulevard- halfway between Los Angeles and Santa Barbara. If you like designer apparel but hate to pay full price, these three malls are not a bad way to spend the day.
Aside from the trips with my family my sister attended UCSB for a semester and when I came to visit we spent a lovely day walking through the sleepy campus and cruising along State Street, window shopping. Santa Barbara’s a big place but the main area still has that familiar small town feel. Visit the local art galleries and be sure to check out some of the wine tasting opportunities if you’re in the area.
No matter where you go, if it’s a day trip or for the weekend, if you’re on the 5, the 1 (PCH) or the 101 chances are you’ll be near the ocean and the view will be mesmerizing. (But please keep your eyes on the road enough so you don’t crash!)

{the view from the upper deck of The Whaler in Venice, CA- a perfect place to spend a Sunday afternoon if you can't fit in a proper roadtrip}
http://www.premiumoutlets.com/centers/index.asp