If you don't have a fireplace, but still want to hang stockings and decorate a mantel, you can craft one out of cardboard! Using cardboard display boards (ones students use for science projects), you can build a realistic (and lightweight) fireplace.
DIY Christmas tree decoration Made with a paper cone and yarn. Dip the yarn in Elmer's glue and while it's wet wrap it around the cone. Let it dry completely and then remove it from the cone. Then decorate!