Bookseat is a bench with integrated bookshelves from Fishbol — can't figure out if it's just a concept or for sale.
Armchair incorporates 5m of bookcase
'Magnetique' Adjustable Shelf; 'Storyline' Sound Wave Shelf HOWTO make a secret bookshelf door
HOWTO make a bookshelf out of books
Bed built into an "igloo of books"
Equation Bookshelf with nesting parens
Xmas tree made from books
Hang your books from the rafters
Giant freestanding letters with bookshelves inside
Invisible bookshelf – floating stacks of books for your walls
Coffee table with integrated book-shelves like hanging files
Library built into a staircase