The Yellow Submarine

I decided to make a house for my cats that looks like The Beatles yellow submarine. Through the holes in the front you can see The Beatles faces and the cats can use them to get in and out. There is a second floor which the cats can access using a hole inside the submarine. From there the cats can play with a toy dangling from the periscope which is covered in a special string that cats love to scratch. I have already tested it and my cats love it and when I bring it home they'll probably scratch it to bits immediately.