We have a narrow mantle over our fireplace but I love to decorate it each season.  This year I want to try something different and found some really great ideas via Pinterest.  I love how many of these ideas use items that you already have in your house and/or garden.  Like the beautiful autumn leaves or pinecones you can pick up on your next nature walk with the kids!  Enjoy these gorgeous décor ideas and share with us your mantle decorations!   Pumpkin Rainbow: This blogger from Poetic Home uses such a gorgeous mix of pumpkins!  I love how each of them are a different color and shape.  You…