You can use any number of other items to make miniatures. Use glue to cover it with the fabric of your choice for walls and another fabric for a rug. Place foam-core walls and floor inside the box. Glue a photograph of fire to the foam core and cut out. Use floral putty to stick the fire inside the fireplace.
Place urns around the fireplace.
Cut out an outdoor scene that has been photocopied from a magazine to fit the window. Glue the outdoor scene in the window, and glue the window to the foam core. Cut a birthday candle in half and stick it inside the nut to create a candle and candleholder for a mantel. Stick it in place on the mantel with the wax adhesive. Place floral putty in a tiny pot, add sticks to create an tree and place that inside the box.