I did have a college professor once who entered the room, dropped a butterknife, a sock and a hammer on the desk and said something like, "Well, there's the evidence. Can't you see who did it? " or something. She was pointing out, using a court room analogy, that we need to explain our evidence. We can't just sprinkle our papers with quotes, we have to explain the evidence to the judge (her). It was cute and made an impression, though I'd suggest you don't bring ANY knife! I don't remember all her details, but I do remember it was an "aha!" moment for me.