I'm just going to keep this very simple. I opened our dinner prayer by reading Psalm 100 (NIV). It's short and sums up the spirit of Thanksgiving quite nicely, I think:
1 Shout for joy to the LORD, all the earth.My apologies for my tardiness, and I hope everyone had a wonderful and delicious Thanksgiving.
2 Worship the LORD with gladness;
come before him with joyful songs.
3 Know that the LORD is God.
It is he who made us, and not we ourselves;*
we are his people, the sheep of his pasture.
4 Enter his gates with thanksgiving
and his courts with praise;
give thanks to him and praise his name.
5 For the LORD is good and his love endures forever;
his faithfulness continues through all generations.
* - For the third verse, I used the New International Version's alternate text, "and not we ourselves" instead of the "normal" version, which says, "and we are his". It's well established throughout Scripture that we belong to the Lord, but the context of this line is that we were crafted by the Lord — we did not make ourselves — and since the very next phrase says (again) "we are his people", I find the "normal" verbiage somewhat redundant. YMMV.