What are new ways you can promote your business?
Think about what you are not thinking about. Yes, it sounds confusing, but think about what you are not doing right now. Make a list of everything anyone else does to promote their business, no matter how silly it sounds. For instance, it may not seem obvious to a plumber to write an article or do a video. But, a video on how to easily unclog a drain could be of great value to customers and show the person as a professional at the same time.
So stalk your competition and see what they are doing compared to what you are doing. And, look for what neither of you are doing. That could be promotion gold.
Online promotion is always a good option. Read the book SEO Secrets to learn how to get ahead of the competition.