This concept project by Noon Studio made me gasp, that’s how clever it was. A stool that can also serve as a building block for a modular shelving system! Called simply Steel Stool, the piece is made from steel and oak. And if you put several of them together, you can get yourself a good-looking and functional bookcase; and when extra seating is needed – take your shelving unit apart in seconds. Thanks to its shape, the item provides storage even when used as a freestanding stool. Design that multiplies storage… I really like that.