My little sister and I have much different tastes in pretty much everything, given that she is five years old. I have come up of a list of ten things that my sister and I enjoy doing together and you can do with your little sibling, cousin, niece, or any little kid you may get stuck watching for the day:

Things to do with children in the San Francisco Area:

1) Go to the park (it's what kids know and love, I recommend Golden Gate Park)

2) Take them for a treat (ice cream, candy store, hot chocolate, McDonald's, whatever). You get to enjoy the treat as well and have some time to chat with your little friend, who is bound to say some funny/interesting things.

3) Go to a movie (movies are quite the excursion for children)

4) Take them to a crafty place (painting pottery) or go to a toy or crafts store and pick up a project you can do at home

5) Bake a fun cake, cookies, make jell-o cut outs

6) Go to a museum geared towards kids (Exploratorium, Zeum, Discovery Center)

7) Take them to the zoo or aquarium (avoid the tiger exhibit)

8) Go to the beach (look for sand crabs, run from the waves, sand castles, the works)

9) Have a day of amusement (Great America, Raging Waters, Marine World, mini golf, bowling)

10)Show them a city (give the kid a sense of metropolitan life, avoid sheltered children)