I second volunteering. Just because your not being paid for it does not mean it cant be helpful or impressive on your resume. Often youll get the chance to do things for free that you could not get a paid job doing yet. So if you wait tables, spend your free time volunteering in the legal community. I also dont think having a blank spot on your resume is that big a deal, providing you can explain it/show what you did with that time. If I can hold out till 2009 w/o working for pay, I will not have made a salary in a decade. Spent most of it volunteering, that is impressive on its own!
FYI you will need to list as well as provide contact info for every job you have ever had for ten years or until you were 18 for the bar, so keep this info someplace where you wonít loose it (your resume is good for that). Because itís a real PIA to find it years later.
I just checked the site for my state and it requires "all part-time and full-time employment as well as periods of unemployment - Account for all time since high school graduation." At least it gives 12 spots.