I've also found out that not a lot of law students attend local bar events, law firm receptions, etc.; at least, not where I am. Going to those events have been a great way for me to network and get in touch with people. Now, if I need to get a judge for a speaker's event, I have a few I can call.
Mattias's point about giving back is quite good, too. You're getting help -- make sure that you're passing it along. I think the "treat others as you want to be treated" has worked well for me thus far.