A little more elaborate than usual, full floor to ceiling Hungarian Cleat Book Shelves.
With the proper spacing an entire library can fit on a few walls and still leave the room
with a light and airy feel unencumbered with heavy boxy cabinet style bookshelves.
Designed by a Hungarian Physicist, this cleat style is a little finicky for the vagaries
of a modern sheetrock wall. In this case all worked out well in the end.