This was so much fun, and so little work for mommy. First take a Bottle (we used Sobe, because they are on sale at Krogers for .50 each) cut the bottom off, wrap a washcloth around the bottom and secure with either a rubber band, or a ponytail holder. Then grab some kind of container, add dishsoap and water and start blowing bubbles. This project makes long ropes of bubbles, the kids thought it was just so much fun!
I got the idea here and here. They probably have better directions on the prep process.