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It's hip to be square. Clockwise, from top left: Barcelona Chair by Mies van der Rohe, Hive Modern; Thruster Lamp, Propellor Design; Square Bangle in gold, By Boe; Barcelona Cocktail Ring by TroveDesigns, Etsy; Storage Unit by Ray and Charles Eames, Herman Miller; Wallpaper 548016, Tapetenshop; Bunting Squareneck T-Shirt, Anthropologie.