Sophie Calle

Just decided to do an art therapy workshop which I am going to talk about later but in association of this idea I have got Sophie Calle to look at.
I am looking at one of her first book I found in the library and I found interesting ideas which are very inspiring and also create a feeling : "why I didn't invent before this simple and great idea?"
E.g.she gets hired for few days in a hotel as a maid just to take pictures.