We are thankful for the food we eat. (hands over shoulders opening and closing fingers.)
We are thankful for the friends we meet. (hands over shoulders, palms up.)
We are thankful for the golden sun. (hands together over head making a circle.)
The trees (elbow in other hand, arms straight up and fingers wiggling.) the birds (hands out flapping like wings) and everyone (hands open again)

http://www.perpetualpreschool.com/holiday_themes/thanks_songs.htm