We've been under way planning our TV wall unit design. After looking through loads of wallpaper designs, I started thinking of budget friendly ideas to add some pattern and color to the back of the bookcases we'll be using for a built-in look. The search began for some fabric that can be glued to the back of the bookcases, just like you'd hang wallpaper. Fabric seems to be cheaper than wallpaper, at least the designer wallpaper I was looking at. Here are some contenders: Do you have a favorite?