The simple cube lends itself to many types of interiors. Adding geometry to walls, tabletops, and furniture arrangements, these lamps show why it’s hip to be a square:

Spigolo by Omikron Design: Designed by Studiocharlie, Spigolo is a freestanding floor lamp made with extruded aluminum profiles that encapsulate high efficiency LEDs. Profiles are connected with a joint that allows each side to be oriented differently to provide direct or diffused lighting. www.omikrondesign.com

Cubismo by Cini & Nils: Cubismo plays with light and shadow with two elements made of 3-D cubes. The top shape reflects light, while the lower form eclipses it, creating an indirect lighting source that can be used alone or in combination. www.cinienils.com

Cubo by Ribag: Designed to complement a range of architecture with a discreet form, Cubo directs lighting upward or down depending on the desired effect. Die-cast aluminium LED housing in matte white matches a new suite of LED fixtures from Ribag. www.ribag-licht.com

Elements Collection Light Cube by Laurameroni: Part of a new collection of floor, table, and suspension lamps, the Light Cube table lamp is a cube of burnished and black-nickeled brass with a diffusor of micro-perforated stainless steel. www.laurameroni.com

LT02 Seam Two by e15: The table lamp originally designed by Mark Holmes in 2004 has been introduced in solid copper. It is precisely fabricated from three pieces of waterjet-cut copper, which are bent and hand-polished to achieve a unique shine. Each lamp is identified with its own serial number, which verifies its authenticity. www.e15.com