Place painted foam board in the back of the bookcase, giving the look of a painted bookshelf w/out the commitment. Love this idea for a small book shelf next to couch. Good way to use yellow without committing to it in a big space.
Wrap a piece of cardboard in fabric and put at back of bookcase instead of painting or wallpaper. You can change as often as you wanted.love this idea sooo much Lets use leftover fabric in the blue bookcase