You could look around for office space for rent that is inexpensive. I live in MN and have an office with a lobby. I offer the office space as a "shared office space with lobby to meet clients for a lite traffic for $100.00 a month". You can get business cards with this business address but do most of your work at home. You may find even less expensive in your area. And if you need to meet clients, they don't know you don't have an individual desk, they just come to the lobby.