Art Camp or Classes for High School Sophomore Next Summer in 925

One of our daughters does NOT want to go back to sleep away camp and although her twin sister is going (yay!) we will allow her this choice.  I told her that she needed to find something else to do during the summer -- that she can't just hang out.  Sorry, I'm mean that way.  Yes, she can work & may do that, which wouldn't be a bad thing at all.  But I would love to find her some kind of art camp or classes that she can take as a high school student.  She loved woodshop in middle school and was very talented at it.  We live in the Tri Valley area.  Any advice welcome!