Do you have any leftover candy from Halloween?
Even if you don't, here's an excuse to buy some more :)
Here is the classic game "Don't Eat Pete!" in true Thanksgiving fashion.
Just place a piece of candy on each turkey. Have one player leave the room.
While they are gone, the other players decided which turkey will be Pete.
When the player returns, they start to eat the candy until they pick the candy sitting on Pete.
Everyone yells, "Don't eat Pete!" and the round ends.
Pick a new player to leave, and pick a new Pete!
Continue to play until you run out of candy, or you go into a sugar coma.