 Some displays are so elaborate residents have to keep parts up all year.School and scouting organizations often sell baked goods and hot chocolate and members of the local school bands play Christmas carols, while other organizations will rent horse-drawn carriages, double decker buses, or limousines and sing carols while driving around the neighborhood.The displays start going up right after Thanksgiving, with most in place by the second week of December and staying there through New Year's.