Built in idea for the dining room door! Oh how I love built ins. Ikea Shelves Into Built-in Bookcases :: I really love this. You could turn any room into a library with this idea. And you don't need ikea for it, either.
Fantastic Summer DIY Project – Build Swings Around a Campfire
bookcase made from bi-fold doors at My Repurposed Life -- great idea! I'm taking my bi-fold door off both closets soon and replacing with curtains; could use one set to make skinny bookcase for one side of bed instead of bedside table.