A quick and easy competition between teachers is to have a Snow Day Pool. Have teachers predict the number of snow days in a school year. Teachers write down on a piece of paper his or her final prediction. A rule to consider is to have the winner pick the closest without being under the final number. Announce as teachers are eliminated and announce the teachers that are currently the closest as the snow days add up over the winter. You can hand out simple prizes such as lunch, snow shovels or cover a class in the Spring.