One thing I learned in reporting a story for our most recent issue on restrooms in educational facilities is that students will always come up with creative ways to damage things. One example comes from Ron Triplehorn of Gallup-McKinley County Schools in New Mexico, who shared how students in his district were bringing in etching acid to permanently etch graffiti into mirrors. For those of you in educational facilities, how does that compare with some of the more unusual tactics that students have taken?