Let's post some. They don't have to be about Thanksgiving or giving thanks specifically. I'll start. This is by W.H. Auden, one of my personal faves.

Petition Sir, no man's enemy, forgiving all But will his negative inversion, be prodigal: Send to us power and light, a sovereign touch Curing the intolerable neural itch, The exhaustion of weaning, the liar's quinsy, And the distortions of ingrown virginity. Prohibit sharply the rehearsed response And gradually correct the coward's stance; Cover in time with beams those in retreat That, spotted, they turn though the reverse were great; Publish each healer that in city lives Or country houses at the end of drives; Harrow the house of the dead; look shining at New styles of architecture, a change of heart.