Cats are experts at amusing themselves. It takes very little—a crumpled ball of paper, a pen left on a desktop or a newspaper spread open on the floor—to engage your cat in what, to her, is the most fascinating of games. Your cat’s imagination can turn almost anything into a wonderful toy that she’ll bat around or chase to her heart’s content. Typically, cats most enjoy playing with small, light objects that are “flickable,” such as a cork or a Ping-Pong ball, which they can swat and then chase. Cats also love empty paper bags to investigate and “hide” in. Remove the handles so your cat doesn’t get caught in them. He could be terrified if he’s chased by a big paper bag. Empty cardboard boxes are also popular with cats. Source: Humane Society