I don't know where I found these shelves, but they're elegant and beautifully conceived for use all around the home:
"This piece is completely modular and totally sustainable. Reclaimed Douglas Fir combines with industrial iron made of recycled material to form a contemporary ecological statement."
Made by the guys out at Blake Avenue Furniture in LA, they are only showing one on Etsy, but you should be able to get many more through contacting them or going to their website here.
(Image credits: )