DIY "Floating Bookshelf" Add two tiny nails just under the brackets. Open the bottom book, and used the nail to hold the cover closed. This hides the bracket completely, making the bookshelf invisible.
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.