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.
Sans the branch and crystals, ideal for lighting the dome. vintage wooden ladder makes great lighting! This one is wrapped with globe lights, and decorated with vintage chandelier crystals and branches. There are endless variations on this theme!