aaargh! DD1 has been told a million and one times (and then some) that she can only draw on paper, but every time my back is turned she (in cahoots with little sister) has scribbled on wall/table/etc. It is now one of our house rules - still keeps doing it. Confiscated and binned most of the pencils and crayons, but still she finds them! she is good at drawing and it occupies her, but eventually unless I am watching her like a bloody hawk, she scribbles on something she shouldn't! And repeat. For the various other simple rules we have. She just can't seem to apply them for herself. Grrr.
And DD2, well, we were better off before we tried to potty train her. And breathe...