Fluorescent Portable Lighting Kit
A Portable, Dimmable lighting fixture in a case for less than a £1000, 2 sets of tubes, Daylight and Tungsten, the unit has very low power consumption 200 Watts, produces very little heat and outputs an extremely soft, flattering light.  Small enough to fit in an overhead locker on a plane, powerful enough to be the only fixture you need to take.  Versatile and robust, should be part of every crews kit.