Cutting Edge Stencils shares how to stencil a thrift store bookshelf using the Drifting Arrows Stencil. http://www.cuttingedgestencils.com/drifting-arrows-stencil-pattern-diy-decor.html
Tree Bookshelf, by PatrickW51 [Instructables]
Seems like a really cool idea, might require a lot of painting, and certainly a lot of crates....
Open up a staircase and insert a bookshelf! Love this! What a great way to sneak more books into my house. #bookshelf #DIY
DIY Furniture Hacks | Grand Piano Bookshelf | Cool Ideas for Creative Do It Yourself Furniture Made From Things You Might Not Expect - http://diyjoy.com/diy-furniture-hacks
diy shelf- leaning ladder wall bookshelf made from 1x boards desk plans too
Check out the tutorial: #DIY Rustic Bookshelf @istandarddesign
Turn a Cable Spool into a Bookshelf...awesome upcycle idea!
Pallet Wood and Metal Leg Bookshelf by woodandwiredesigns on Etsy
DIY Crates and Pallet Bookshelf More