You may also want to check with the local IBM ring - I forget the # but Bob Ingalls was president last I was there. They meet in a place on University at about 42nd called "Jack's Place." It's owned by Jack White and houses a wonderful collection of vintage magic items.
The one in Temecula is called "The Trick Shop."
If you make it up towards Disneyland, there are two shops in Orange County.
One is Best Magic (that's where I work sometimes.) It's located at the SW corner of Magnolia and Orange in Anaheim. The address is:
625 S Magnolia Av
Anaheim, CA 92804
The other shop is Ken Sands place - Magic Galore and More. It's located in a bowling alley in Westminster. I can only tell you good things about Ken and his place. Unfortunately, I can't lay my hands on the address quickly.
If this area is of interest, there is more around here and I'd be happy to get you more info.
Impropriety is the soul of wit.