For Thanksgiving, I prefer reserving the xmas tunes till after turkey day as I know there'll be plenty of time (even though I do love yuletide songs) to become burned out playing/hearing them, so focus on more autumn-winter seasonal tunes like:

Autumn In New York (Vernon Duke)
Autumn Leaves
Early Autumn (Johnny Mercer)
Moon Dance (Van Morrison)
Winter Wonderland
etc.

I'm also interested in what others here play for Thanksgiving too, as I too got some Thanksgiving gig events to play next week.

Scott