Great ideas! In a handful of months I'll be going down the potty train ride as well so these ideas will definitely help me out. I guess the only thing I could suggest about the treasure box is maybe not give him a treat EVERY TIME he goes to the bathroom otherwise it will turn into a game and he'll say he has to go to the bathroom all the time. Maybe try giving him a prize at the end of the day/week for no messes instead. That way it gives him something to work towards.