Have any Eco-friendly and inexpensive Christmas decoration ideas?

Could you please give me any eco-friendly and inexpensive christmas decoration idea. Please list websites if they are used for your answer.

Details:

1. Make all your decorations edible. Play dough and use cookie cutters for x mas shapes. Buy a christmas tree at Lowe's then plant it when you are finished. Don't buy any extras only buy what will be used or reused.
2. The greenery of nature plus pine cones,sweet gum balls and red berries>You can also use cranberries and popcorn,throw it all outside after the holidays to feed the birds and squirrels.Can't be any friendlier than that.But if that was what you were asking you already knew it.No I don't think alot of the green things truly are they just costs more.You will be the judge of that.Merry Christmas!
3. We used to string popcorn... I loved sharing that special Christmas joy with my mom awwwwww...... I think we might do that with the kids this Christmas.. thanks for the reminder! MUAH!