Hello Gitu,
Welcome to IL.

. USA is a land of opportunities and am sure you would find something which interests you in Sandiego.
If you are the sporty kind, you could take up classes in tennis or swimming which is a really good pass time and would also keep you fit.
For the altruist in you: You could volunteer in the hospitals near your house and help them in a lot of things, starting with spending time with patients to doing some basic clerical work.
To feed your creative mind: There are plenty of shops like Joann's and stuff where you can find all sorts of beads and other materials. And IL has a lot of ideas and wonder ful people who can help you with arts and crafts.
As you are an MBA student you could also spend time looking at the share market and start investing and surprise your hubby.
Hope That Helps.
Cheers
Ramya