There isn't anything specific really. Your community involvement, and participation in school are important, but that doesn't mean you need to devote every last free moment to buffering your resume.
I personally didn't really do anything law school related. In fact, I didn't realize I wanted to go to law school until about August of 2005. I played sports (rugby and martial arts) at university, and studied abroad on an experiential learning programme. That was enough in my case.
But really, it all depends on your interests. If you really like playing ping-pong, do that. What matters is how you showcase your participation and involvement in your personal statement when you actually apply to law schoo. In other words, describe how committed you are to your interest, and why. Discuss the time involved and how it (of course) taught you time management skills, team work (ping-pong in teams?), a sense of fair play and competitiveness, etc... etc...
Every law school admissions officer you talk to and ask about this will tell you the same thing. It doesn't matter what you did, or how you were involved. What matters is "why" and "what you were able to take/learn from it." And the only place they'll even want
to hear about this kind of thing is on the personal statement.
At the risk of sounding redundant:
- Pursue your own interests
- Avoid trying to tailor your extra-curriculars to what you think a law school might want; they don't want anything
Canadian Law School Admissions Webhttp://www.clsaweb.com