Positive reinforcement - Put a cotton ball, marble, pom-pom, etc. in every time you catch your child being good. Do something special when it's full. Nice little reminder for mom to notice the good and acknowledge it!
Going to make one for home! Behavior Chart: Begin at Good Job every day. The clips are moved up and down based on certain requirements. If a child is on any green space at the end of the day they get 5 pom poms in their jar. When the jar is full the child gets their pre-chosen reward (treat, prize, night out with mom or dad, etc.)