I have vinyl window clings that all my current DCF's put on their vehicles. That way they are traveling advertisement for me.

In past years I have also held and "Open House" to bring in interested clients. I also give current parents a discount on any new referrals they bring in (after new family enrolls and stays 6 months). I also send out post cards/business cards with Halloween candy, give out cards at community events. I even helped sponser a local event by donating some supplies and a $100 cash donation so my child care name was mentioned several times during the event as well as having my child care name written on all the event news and flyers.
I also hang flyers in local schools, colleges, doctors offices, libraries, grocery stores and anywhere families go.