Dreaming of a Ruby Christmas

It's six more days of Advent, and then... Christmas! Your task is to create a Ruby script that celebrates Christmas. Create a virtual, ASCII Christmas tree completely with blinking lights. Or a countdown calendar 'til December 25th. Or a script that generates the lyrics to The Twelve Days of Christmas. Or whatever you like: some Christmas creativity.

And... Merry Christmas and a Happy New Year!!!

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P.S. Yes, I'm politically-incorrect. That said, if you'd rather celebrate Hanukkah, Kwanzaa, New Year's or another holiday using Ruby script, please do!