Hand and nose prints on the windows and doors. Some people might wipe them off right away, but that isn't the sort of thing that I worry about. We currently have a greasy little babe hand print on the kitchen window, in a location that she only could have reached by standing on the kitchen table. I actually kind of like it there. It means that she was curious enough about something in the outside world that she wanted to get as close as possible to check it out. It means that her little brain was pondering something. Or she just liked the feeling of her nose smushed against the cool glass. Either way, it makes me smile.