The best options are business cards, door hangers, postcards and real estate door knocking flyers. These are easy to carry and should be chock-full of information about you and your services.

You can get 500 postcards for just $0.46 each (or lower pricing for bulk buys), plus real estate-themed flyers, door hangers, letters, brochures, and pop-by tags. Could you afford $230 each month ...