Santa Claus brings gifts to well-behaved children on Christmas Eve, which is celebrated on December 25th to commemorate the birth of Jesus Christ. Gingerbread houses are popular Christmas decorations made of cookie dough that are covered in candies and icing. Building one is a fun family activity during the holidays. Christmas trees, usually firs, spruces or pines, are decorated with lights and ornaments as part of Christmas festivities and are displayed both indoors and outdoors, with presents sometimes placed around indoor trees.