My only recommendations is to just do as much free advertising as you can. Sites like Craigslist have provided me a few clients, short and long term. Look for classified ads and try those.
Contact local business associations and see if you can present your business and hand out business cards at their next meeting.
Depending on what your services or niche is, see if there is a compatible business that you can contact. For example, if you provide bookkeeping, I have received the occassional overflow projects from local CPAs.
Hope that helps a bit and good luck