In my massive and well lit studio I have an area completely dedicated to costuming. Aside from using the space to construct a series of elaborate and bizarre costumes meant for a show of some sort, I love having people swing in with their various costuming ideas and challenges. For a reasonable fee, I manifest their wildest costume fantasies.
In the real world, halloween always brings a few friends knocking at my door in search of minor costume augmentation. I love doing it, and I often daydream about taking it more seriously.