How Do You Find a Babysitter?

This feels like a silly question, especially since my oldest is already 5. But our families have been very helpful for the most part, and we don't get out often! But in the last year or so, our families have become much less helpful, and we realize that we really need to find a good babysitter. As I said, we don't get out much. But for example, we're remodeling and wanted someone to watch the kids for a little while so we could go look at building supplies. We ended up taking all three with us. And now we really need to prime and paint before the project can continue, and again no one in our families can watch the kids for a few hours.

I've looked on craigslist and a few of the babysitting sites (like care.com) and just don't know what I'm doing. It feels strange, since I'm a child care provider myself, but it seems like I don't know what I'm doing. I really just want someone friendly and competent, like a local mom or teenager willing to watch them for a few hours. (Since I'm at home full time, I will also admit that I'm a little nervous about handing them off to anyone--even my mom--which may make it feel a little harder to me.)

So how have other parents found sitters? Have you had good luck with craigslists or other websites? Or have you looked at the high school or something (a little rougher now that school's out)? Thanks so much!