Yep, you read that right...actual fossilized dino poop. We recommend passing it around to students to inspect. They are likely to be unimpressed until you tell them they just handled fossilized dino-doo! How about a stocking stuffer? This adds a new level of interest to any study of rocks and minerals. From a geologist's viewpoint this is called coprolite, we'll let you decide what you want to call it.