There is one little bookshelf in our house that my daughter cannot seem to stay off of. She takes all of my things off the shelves and no matter what I've tried, discipline wise, she still does it. We've tried telling her no, explaining that those aren't her things, and timeout.
The simple solution would be to get rid of the bookshelf, but my mother has a house packed full of shelves and breakables, etc and my daughter doesn't touch any of them. If she does start to go after something she stop...