I like Christmas songs that talk about Jesus as the light. Barlow Girl "Hallelujah, Light Has Come;" The Martins "Light of the World;" Point of Grace "Let there be Light."
Part of the wonder celebrating Christmas, for me, is that we pause at this time of year, when the world is cold and dark and turned from the sun, to remember and rejoice that God sent His Son, the Light, as the greatest gift. We don't know when Jesus was born to celebrate His actual birth day, but I love how celebrating now represents why He came. To bring light and rescue us from our sins.