Things to include in cubicle decoration?

I got a new job recently, and I'm allowed to decorate my cubicle however I like as long as it's "not offensive". I also can't have candles or knives because of safety issues. I've seen one guy with a crucifix on his cube wall, and I'm pretty sure the person who had this cubicle before me was Hindu based on the stuff he left, so minor religious paraphernalia should be fine. The job involves making sure people are following safety regulations, so it's something where doing it well is important. Any advice? Thanks!