The Wool Acorn has a kit to make this cute Christmas tree. You can find it here. Or you can use something similar with mini pom-pons.
Kids can paint pinecones to add to any of your decor. Here is a cute example from Mothersniche.
Turkey Options for Thanksgiving are as follows:
This one from Jinxy Kids uses feathers. I found a bag of assorted feathers at Hobby Lobby.
Catch My Party featured this turkey with crayon tail feathers.
Lady Sandra has these cute google eye birds.
Family Fresh Cooking has this great pinecone center piece.
This turkey from Susan B. Anderson has leaf tail feathers.
Here is a hub pages link with tons of ideas.