In our bedroom, we wanted a good amount of open storage with built-in floor to ceiling bookshelves. But on a budget! So we turned to the IKEA BILLY. The project was completed with all the work done on weekends over a period of 4 months. IKEA items used: 4 x BILLY Bookcase 31 1/2x11x41 3/4″ 3 x BILLY Bookcase 31 1/2x11x79 1/2″ Other materials and tools: 2×4 lumber Metal wall fasteners 1/2″ pine boards Wood filler Wallpaper Nail gun Miter saw Paint Floor to ceiling bookshelves hack instructions: First things first, I designed the layout in Adobe Illustrator. Then, I built boxes (frames) out of 2x4s on the floor as a base for the bookcases to sit on and allow HVAC flow from the floor register below the bookcase. I used a miter saw and a nail gun. Related: A BILLY library like no other First, I attached the boxes to the floor and wall with right angle metal fasteners. Then, I attached larger BILLY Bookcases to 2×4 boxes on the floor and to wall. Next, after completing and securing the lower bookcases, I ran 2x4s across the top of the larger bookcases as a platform for the smaller, top bookcases. As before, I attached the top bookcases to the 2x4s and to the wall. Related: No doubt about it. BILLY is made for built-in bookshelves With the BILLY bookcases all secured to the frames and walls, it was now time to dress it up and give it the built-in look. I used 1/2” pine boards for trim covering the front surfaces of the bookcases and to provide a continuous, seamless look. After that I primed and painted the book cases and shelves. I filled rear channel and extra shelf dowel holes with wood filler. The last step was to wallpaper the rear wall of the bookcases. And finally, it’s done. We’re taking our time to fill up the many, many shelves. ~ by Bernard S.