Do EVERYTHING you can that will not be economically feasible (travel for a month or three) or even possible (spend a summer at Cambridge University in England). You will live to regret not doign these things when, after you get a job, you get two measly weeks of vacation per year.
Use it all up: take extra classes, join a club, make a friend from another race, etc...
Good call on the club thing. I'm a marketing/management student and I ended up as president of the human resources club on campus. It is a good thing I did, because now I get to go to all the alumni events and meet important people I wouldn't have otherwise.
To the OP - Just get involved. Start by going to every event and club meeting on campus and stay at it until something sticks.
Use it all up: take extra classes, join a club, make a friend from another race, etc...