9. Total guess based on the only Christmas carol in the form of a question: What Child is This?
18. Two front teeth of the saw are missing. NPR's how I made this interviewed Ross Bagdasarian Jr. (son of Alvin & the Chipmunks' creator) on today's show, so I'm guessing: All I Want for Christmas is My Two Front Teeth
20. Clear sky at midnight, so: It Came Upon a Midnight Clear