I don't know anything about the sewing machine business, but I have had a couple of ways I've gotten cheap results for my detailing business. The first is craigslist. I just made 2 different ads with Word and since posting them for free in the services section of the site I've been getting 2-4 appointments per week out of it. Also, like Beast said, I joined a detailing forum and have got some clients from there as well. The other place I have found success for cheap is advertising through my church. People, especially in her line of work, like to hire businesses affiliated with their church.