Another part of "Dear Me", I bring the guilt train. You can't really see it, but the back of the picture has a slip of paper that you can slide through the cut out window. Again, I'm not sure what that is called, but it's another flourish I remember from activity books of my childhood. For a closer look at each you can go to my Flickr. I know this is not super ingenious, but it was super enjoyable to play with and make.
Oh, and thanks stranger for letting me take your picture.