If you think that the house for a cat from cardboard will not be reliable and will quickly fall apart, then in vain it is an occasion to make a new one and change the situation in the apartment. To issue a "cat-place" you can have enough imagination. The house in the video is equipped with a staircase and decorative windows, of course thick thick cardboard is suitable for its creation.
You can decorate your home at your discretion, classic paws will look good.