Every year, for the holidays, my mom gives me a lunar phase calendar. It is one of my favorite traditions (receiving this gift) and one of my favorite gifts ever. I always post it up on the back of my office closet door, so that I can look at the moon phases during the year. I know it sounds random, but I look more often than you think one would. I love knowing about the cycles of the moon, and knowing exactly when the moon is full.