"This is a slightly different kind of art," said Karen Ripley, director of cultural programs at Boulder Public Library in Colorado. Indeed it was. Students from the University of Colorado collected trash and lost items from various spots around the city for the exhibit, which was called "My Favorite Place to Walk in Boulder: Or Found Trash Objects." Apparently, one custodian didn't "get" the exhibit. Thinking it was just trash, he threw it away. "One of the comments our maintenance guy made was that it smells," said Ripley.