I've done this before. Use it for putting pots on or whatever. I have book cases made this way only using wider blocks and standing up.
DIY Bookshelf Under The Bed
GENIUS! Make a DIY shoe rack using an old bookshelf and making hexagon inserts to hold the shoes! Full tutorial by The Crazy Craft Lady for Designer Trapped in a Lawyer's Body.
Hanging Book Shelf - Drill three holes in a slab of wood, thread some rope through and tie a knot at each end. Hang the suspended slab of wood via a hook screwed into a ceiling beam and you’ve got yourself a beautiful alternative to a table.
Boekenwurmen opgelet! 10 super originele ideetjes om jouw boeken in op te bergen!
Blonde and Cupcakes: DIY Home Decor Ideas: On A Budget