Kids will always be kids no matter how strict you impose rules inside the house. Hubby and I don't give our children material rewards very often but there are certain instances that we do such as when they behave well in public or when they volunteer to help us around the house. I used to give them stickers then at the end of the year, they count their stickers and we convert it into cash. Now that they are bigger, one of the favorite rewards they ask is go to Dunkin Donuts and have some donuts. This does not happen very often but it is always a treat when they get it.