Bay Area grandparents can steer rambunctious kids to a drop-in day camp with the most spectacular view in the USA. At Fort Baker under the north end of the Golden Gate Bridge, the Bay Kids Discovery Museum offers a nonstop roster of music, art and scientific activities, mostly for kids under 6. From wave workshops to Saturday performances by the likes of Gustavon Yelllowgold the young and the curious get enthusiastic encouragement from counselors. Children must be accompanied by an adult and vice versa. $8 for seniors and children. First Wednesdays free.