Curtains have a great opportunity for adjusting material properties of fibre. You can set a lot of material parameters and obtain very interesting results. You can assign colour of material and how it reflects the light and other optical properties.
You can assign textures on materials. As textures you can use any pictures, texts or video footages. You can also apply textures for bump, transparency and reflection maps. It allows to decorate your fabric with any your logos, images or video. For example, you can easy to do waving flag with your logo.
You can use complicated multilayer compositions for create very sophisticated and beautiful fibres and create very nice-looking video.