I've never advertised yet... always have too much work.
1. Talk to your friends and give them extra copies of your cards to hand out at work etc.
2. If you are part of a church or organizations like rotary or lions club, VFW, Masons, or whatever put out word there... even if no one there needs it they usually know someone who does. Many have bulletin boards where you can place business cards.
3. Chamber of Commerce, Better Business Bureau, etc. in small towns especially just letting them know you exist may get you some business, becoming a member will often get you on their website.
4. Set up your own website... I recently set up a website using Microsoft FrontPage with GoDaddy.com as a host... total cost for 10 year registration, 2 years hosting, and 50 email accounts $128. There are also many free sites like geocities, msn, aol, etc that offer free sites. Make sure to get yourself a good name and get lots of keywords listed in the search engines so that if some one does a search for electricians, lights, ceiling fans, GFCI, wiring, service, or ???? in your area you show up.
5. Keep your eyes and ears open while you're out shopping. I get jobs all the time by being a little helpful at the hardware store or Home Depot... often do it yourselfers will find themselves in over their heads and be perfectly willing to pay good money for a little technical support or a proper installation if you can do it right away. Do it yourselfers can be a good souce of income also... They will often pay you to come out to access their situation, make some wiring diagrams and print out a list of materials, then pay you to check their work before calling the inspector.
6. Make your own work... if you have the means to purchase rental property or handyman specials to make upgrades then resell or rent out. Remember rental properties are an excellent source of income especially for someone who can do their own repair work, and they can often be bought with no money down or cash back for upgrades... My parents currently have 3 duplexes.
7. Do good work in a timely manner... no amount of advertising will ever be worth more than workmanship... it is much easier to keep a customer than to find a new one, and a happy customer is the best advertising ever.
Good luck