Angular, but in a more structured way than the others.
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Open ends and top
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Different height shelves
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Very basic bookshelf
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I seem to be attracted to angled shelving
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Diagonal grid
Good idea: make the bookcase the same colour as the walls so the books stand out. Looks less obtrusive, would make the room look not as cluttered.
Angular, but in a more structured way than the others.
Q