Lights, ribbon, bells, wreaths, and all the other wonderful sights and smells. Reading all the Bible stories that tell the wonderful news that "In this the love of God was manifested toward us, that God has sent His only begotten Son into the world, that we might live through Him." 1 John 4:9
Picking out that special tree and then getting to decorated it!
For unto us a Child is born, Unto us a Son is given; And the government will be upon His shoulder. And His name will be called Wonderful, Counselor, Mighty God, Everlasting Father, Prince of Peace.