When my students came back from break, I knew they would start back on that cycle of school/lack of sleep/stress. I made one of my first assignments a "make a ceiling poster that gives advice on how to reduce stress". I gave them stock paper, and here are a few results. Yes, there were "last minute bad" ones, but mostly they were this creative. For the last few weeks, I see various students in all my classes gazing at the ceiling. Free eye-candy.