I've been working on drawings of stacked chairs for an upcoming project... The majority of these so far are of Gispen Cantilever chairs from the 1930's.
(Left: a stack of 5 Gispen Cantilever Chairs - Right: a stack of 4 Gispen Cantilever Chairs.)
(Top: 3 generic leather couches combined together and balanced by a metal pole. - Bottom: 3 Gispen Cantilever chairs combined together with a metal pole.)
(10 Gispen Cantilever chairs stacked and fastened together.)