Abstract: A multifunctional, configuration-convertible furniture item is selectively convertible between at least two functional configurations. Such a furniture item includes a generally vertically upright shelving unit, with a movable frame portion and a movable extension portion. The frame portion is selectively movable between a generally vertically-extending orientation when in the above-mentioned first functional configuration and a vertically-elevated, generally horizontally-extending orientation when in a second functional configuration. The extension portion is selectively extendable outwardly from the shelving unit and selectively retractable thereto. When extended, the extension portion is vertically supported by the frame portion when the frame portion is in the second, generally horizontally-extending configuration, thus defining an elevated horizontal surface extending outwardly from the shelving unit, which can serve as a bed, a desk, a bench-type seat, or other functions in various embodiments.