Portable Dressing Rooms business. Business Overview Do you live in or around New York, Los Angeles, Toronto, or Vancouver? If so, then starting a business that rents portable dressing rooms to the film industry could put you on the road to financial freedom. The movie and TV production industry is booming, and operating a portable dressing room rental business can make you a financial star. Eighty percent of all movies, music videos, TV programs, and commercials are shot in or...