Now that brings back memories from college.
One time I went out to the kitchen about.. 2 am. Was wanting some water and knew we had a mouse running about. My luck of all things was that I was coherent enough to realize it was there.
I was also coherent enough to pick up the glass skillet lid, and catch the mouse under it. I slapped a post-it "Mouse under glass," on the lid and went back to bed.