Offer an adult education class or seminar. This may be something you conduct through a local school or university, or it could be offered through a local business association or group. Your intent is to bring value to the attendees and the program hosts and to become known.
Variation: Spread the wealth. Invite other professionals in the area to speak as well. By doing so, you offer more value to the seminar and improve your referral network. Other professionals will also be able to help in the marketing of the seminar by reaching out to their own networks.
Variation: Find a professional or celebrity speaker, and bring him in to talk about a topic that is relevant to your audience. Partner with a local hotel and business associations to provide the venue and help cover the costs.