Scott Jarvie's cloud formation-inspired modular lighting system is excellent on its own or grouped. According to Scott:

"It provides a vertical directional light with a diffuse horizontal glow, utilising fluorescent tube bulbs, which have a number of benefits, including energy efficiency, low cost, long life in service and wide availability. Unlike compact fluorescent bulbs you are not required to dispose of the electronic starter every time you change a bulb."

[Contemporist]