I think that is a great idea. I used to work in a daycare, and we did that a few times for parents. It was really fun--we charged a flat fee (I think 10$), and we started it at 5:00pm and ended it at 9:00pm. We did pizza, a movie, and had a craft activity for the kids, and they brought their jammies and bedtime toys. The parents seemed to really like it! And, because it wasn't super late, the kids were all still awake when the parents came for them. I think if you do it, you should set parameters for pick up times, because you might be stuck staying up LATE otherwise! I wish you lived near me--I'd take advantage of your service!!!