Cardboard Cat Rocket | Make:

No matter how many fancy cat toys they have, there is nothing in this world that makes my cats happier than a good old fashioned cardboard box. So, taking a cue from them, I designed a cat tree that turns four regular cardboard boxes into a flashy two-story cat rocket, complete with carpet for scratching and a porthole to jumping into and spying out of. And, wouldn’t you know, it worked! I don’t think I’ve ever seen my cats more excited.