the flag
http://www.50states.com/flag/caflag.htm
the music
http://library.ca.gov/california/cahinsig.html#Heading15
State Rock California has a greater number of minerals and a wider variety of rock
types than does any other state. Serpentine, a shiny,
green and blue rock found throughout California, was named the official State Rock in
1965. It contains the state's principal deposits of
chromite, magnesite, and cinnabar.
skateboard
http://liquorworld.com/skate.html
Skateboarding is important in California, there are many shops for skaters.
Skating is like a religion !