In my photo/video studio, most of the light hangs from a steel trellis attached to the studio ceiling. I use this chain to make safety loops to prevent accidentally dropping lights or hanging items. This is a reserve in case something falls out of the steel mesh. The use of safety chains or tethers for this is common in theater stage lighting, so I've used this practice in my studio as well. I also don't have any light stands or cables running across the studio floor. These chains wrap around a steel ceiling grille and fixed part of the studio light using a spring carabiner to connect the ends together. Electrical outlets along each side of the ceiling grid place an outlet every 6 inches and within 5 feet of where I find the light on the grid, so it's also easy to keep power cords on the floor.