Like always, I did let my cat use the cardboard box of my online delivery. But it seems like she got bored of it after three days. I then used duct tape to seal the box and cut a smaller hole in it. Immediately, she became interested again. I can place the cardboard box differently, for varied fun. In the photo at the top, I placed the box upright and as you can see, she went in there and looked out of the hole. I shot a whole set of photos of her today while we played with the box. So, I have some more for future uploads.