One of the tricks for making the most of your lights is to use gels. The typical way to use gels on smaller shoots is to just clip them to the barn doors. This works fine for color gels, but not for diffusion gels. Diffusion gels soften light, scattering the rays so that it seems to wrap around objects. However, to really get this effect, you need to not only scatter the rays by punching the light through diffusion, but also enlarge the apparent size of the light source. To do this right, you really need a gel frame.