Light the lights! Whether you hang hundreds of twinkle lights a'la Clark Griswold or put a single candle in the window, warm and welcoming light is the essence of the holiday season.
Put colored bulbs in your front porch socket! Trim the eaves with icicle lights! Put a battery-operated "candle" in each window to welcome your weary travelers home.
Break forth, O beauteous Heavenly light!