Today we found a nice instrumental variable, "we" being me and my co-conspirator on the research project for last year's practicum. Yes, this is really the most exciting thing that happened to me all day. I also went to class, printed some stuff, did some things here and there, and didn't go to the gym. That's the thrilling life of a graduate student.
(For non-technical readers, an instrumental variable is when you replace some of the data with a bassoon. No, not really. But you don't really want to know.)