Throw salt over your shoulder for good luck
Well, it may not necessarily bring good luck, but it certainly will ward off the bad. That's because of the pagan belief that a devil lurked in back of you to the left. You could diminish his diabolic powers by throwing salt in his eyes. Another superstition holds that merely spilling salt is a bad omen — possibly stemming from the fact that this was once a rare commodity, too precious to be wasted.