I would definitely consider my office/craft room to be my space. I love that I am able to have a room for my work and my hobbies - it may get messy at times but I can clean it up with a smiple close of a door.
I am always telling Toodles that there is no good for her in my space. I have decided that it is for the good of the both of us that I use a child gate in the door way - this way she doesn't get in trouble for touching everything she is not to and I don't have to get after her for doing so. When I do bring Anna into my space with me she loves it (hence the big smile while she sits in my office chair) especially when I let her drawn on paper with a pencil.