The piles of little messes all over. The little one's habit of going into other people's private possessions. We're so very sick of it all. It has to stop. The trouble is, how? We try, but the follow-through is weak. Signs on the doors and walls? I don't know.
I do know that I am often tempted to simply box up most of their possessions. That Flylady story about the fed-up mom who boxed up all her son's toys except a few Matchbox cars and some crayons and papers comes to mind. He became a changed kid, thanks to fewer toys. Thanks to less chaos in his life.
The thinking cap is on.