Ask Slashdot: Advice For Summer Before Ph.D. Program?

First time accepted submitter tookul03 writes "I'm a graduating senior from a small New England liberal arts college, and have secured a spot in a Biological Science Ph.D. program for the next five years. I realize this coming summer will be my last out of the lab for a long time and am not sure If I am interested in doing something related to my research interests or use it as an opportunity to find some new hobbies/interests. I figured the Slashdot community had a number of individuals who were/are in a similar position (albeit different fields) and could shed some light on things they (or others) had done. Thanks."