Why do you guys WANT to be done with undergrad? Once you get to grad school, you realize how wonderful undergrad truly is; going out every night, not having to work all the time, studying for exams a few days before instead of weeks before. I was like you all in the sense that in May of last year I was ready to graduate, but now I just look back on those days and wish I had done more with my time there, not wasted 2 years dating the same girl, not forgoing an opportunity to go out on a Tuesday, having one more PBR than I should. It's things like that you can't do in law school all the time. Cherish your time in undergrad. You will miss it when you leave. Trust me.
Try to do them problem sets, kills 3 or 4 nights a week.