This is the pirate store:
http://www.826valencia.org/store/index.html

The pirate store is on Valencia, which has some decent taquerias (local flavor woo!) and a tasty Indian ice cream store:
http://www.yelp.com/biz/bombay-ice-creamery-san-francisco

Valencia is a nice (often sunny) stroll and is close to the 16th and 24th St. BART stations, so you can get back to the action downtown without much fuss.

The de Young Museum in Golden Gate Park has a Chihuly exhibit — I haven’t been, but it seems exceedingly popular:
http://www.famsf.org/deyoung/exhibitions/exhibition.asp?exhibitionkey=819

And I would, if I were you, consider taking a BART ride to Berkeley and walking over to the Cheese Board, which makes the freshest goddamn pizza I’ve ever had:
http://www.yelp.com/biz/cheese-board-pizza-berkeley

Have fun!