Man, I don't do shit for my cats besides feed them, clean up after them, and letting them use my lap for sleepytime. Thanks for making all us cat owners look bad, asshole.
For bit there I thought he was going to keep the box towers separated, creating a sort of cardboard Zozo, buildings betwixt which Rufus would leap recklessly
Don't think I haven't thought about building something like this -- cheap plastic storage bins with holes cut in them, with cat-sized hamster tubing. Maybe stack one or two of them for a high-rise effect.
But of course they'd prefer to sit in the laundry basket.