Here's a song that I love to use during this time of the year.
It is titled, "I am Thankful" and it is written by by Hap Palmer. He's been around for awhile and has many great songs and CDs. You can check him out on his site here. On his site, you can find his CDs and also the lyrics and free activity ideas to go along with his songs.
His song, "I am Thankful" is a great one to use for a Thanksgiving theme. I like it especially because you can ask students what they are thankful for and insert their responses right into the song. I have recorded it with answers in the song just so you can get the idea of how this song sounds/works, etc. I only use this song for educational purposes as well.
Isn't it awesome when a song naturally targets a goal? (i.e. answering Wh questions: "What are you thankful for?") :)
I hope you have a wonderful Thanksgiving holiday!