I don't think I've ever seen anything this cool made from a T-shirt and a hanger. As neat as it is, it's not the only thing you can make from household items that your cat will love. If you've got a tissue box, find a ping pong ball, place it inside, and let your cat paw at the ball. If you've got a small cardboard box, tape the flaps shut and cut a few holes in it, making them slightly bigger than your cat's paw. You can put fuzzy mice or even cat treats inside the box and let your feline go crazy. You can also keep your cat amused for hours with a simple tunnel system. Using large cardboard boxes or paper bags, make holes in each end and tape them together. You can even hide toys or treats within the tunnel for a real adventure.