In a children's room, it just makes sense to store books facing flat. Then children can put their own books away. Also, flat bookshelves take up less floor space, a bonus for often tiny secondary bedrooms. Special thanks to Matt, Heather and many other readers for sharing their photos.
1 – 12′ 1×6 Board (cut sides out of this board)
2 – 1×6 @ 57″ (Sides, Top Cut out in step 1)
Footer. Using 3 1/4″ store bought base moulding, cut your footer with the outside corners mitered at 45 degrees. Preferred fastening method is to use 1 1/4″ brad nails, but you can also use a couple of screws and wood glue (or a good ole hammer and nails). Dimensions are not given because your moulding could be any thickness.
Finishing. Fill any holes with wood filler and sand and finish as desired. Screw through the back supports into a stud in the wall to keep the bookrack in place. You could alternatively use a picture hanging kit to fasten the bookrack to the wall.