W.A.
You know, I had a manicurist once who was mobile. She didn't have a salon, so no rental overhead, no commissions to pay. It's kind of like those places that come to your house and detail your car for you. She had hours by appointment, and had a LOT of clients, particularly home-bound. Some of those women just loved her. You could start a business like that, with your gear in your trunk, and a magnetic sign on the side of your car, and just work weekends or evenings until you get your business going.
Do make sure you have your head on straight about running your own business. Take a class or two, read some books, talk to other small business owners in your area who are familiar with local laws, and can provide you with insight. A good place to start is your local Chamber of Commerce.