Like many people, I like to tailor my listening to the occasion. On Thanksgiving, I generally listen only to American music. The one constant is Ives' "Thanksgiving Day", from the Holidays Symphony.
As Elliott Carter is one of my obsessions, I usually listen to what I consider one or more of his most typically "American" pieces, like the Cello Sonata, the First Quartet, or the Concerto for Orchestra.
Another obsession is the string quartet, and I frequently turn to Lee Hyla's Second or Howl (which may be perfect for this year), Samuel Barber's Quartet, Ruth Crawford's marvelous Quartet, or Crumb's Black Angels.
You can't go wrong with one of Copland's ballets, his Emily Dickinson songs, or his Third Symphony. Or Roy Harris' Third, for that matter. Sousa marches. Gershwin songs.