Best non-tourist-y things to do in San Francisco?

For teenage girls who are from the Bay Area and have already been to the Pier and the zoo a zillion times. Also we are on a tight budget. ThanksBest non-tourist-y things to do in San Francisco?
Go to the Mission District - you can take BART to 16th and Mission. Walk west/up one block to Valencia, and then walk along Valencia checking out all the shops and people.



Get a coffee at Ritual Roasters.



If you have the time and energy and like walking and sightseeing, walk all the way down to 24th and Valencia, and then turn left (east) on 24th St. Go down 24th St. and check out the world famous murals along the side alleys. You can visit Precita Eyes on 24th to get a map and info on these murals.



You will see lots of fun, funky interesting people and shops. There are a ton of cheap, good places to eat, and a gazillion cafes. Get some pie at Mission Pies - on Mission at 25th or 26th...



There is a BART station at 24th and Mission that you can use to get home/back to whereverBest non-tourist-y things to do in San Francisco?
go to the haight, china town, hit up one of the beaches, hang out down town,go to the mission...I do it all the time..Or I ride buses around because you meet a lot of interesting peopleBest non-tourist-y things to do in San Francisco?
Wondercon is this weekend. It's pretty cheap. I don't know how much of a geek you are, but it's an interesting scene to say the least. Sounds like you don't have much else better to do...Best non-tourist-y things to do in San Francisco?
You should go to the haight, if that's your thing. Or go to Dolores Park if it's a nice day, it's fun to just lay around on the grass and food from a nearby cafe! Or go thrifting in the mission?
You could always go people watching in the Castro District...