A new law library wouldn't hurt.
This probably seems like such a simple answer - as far as just gain any law experience you can but: If there were two students being considered for admission - same GPA range, same LSAT, both have comparable PS, LOR's, etc. (it's a stretch, I know) - - what is one top thing that someone could have done that would actually make or break that tie? A friend of mine was just telling me that volunteering on the resume is so overrated because practically everyone who has plans to get somewhere (LS, Med school, etc.) has done at least some volunteer work. I feel like the same goes now for travelling Europe. I know so many of my undergrad classmates who took a couple months after graduation to travel. So, excluding grades, tests, the standard undergrad school organizations and typical work experience at a law firm, is there one task/experience/factor that would even make the schools say "Wow!"? Or do the above activities pretty much cover everything?
Different things for different schools. Some schools absolutely hate it when applicants call their offices AT ALL with questions or additional info. Other schools will bump up a student when they receive contact from them as it shows them that you are interested and would accept an offer to attend. Just check out the board on success stories and try and determine where your prospective school lies.