Tie on feathers and hang small toys to pique your cat's interest. Dogs like things they can chase, something as simple as a tennis ball inside an old sock. Your dog will enjoy a game of sock toss with you, and the sock makes it possible for the dog to swing the toy in the air and play chase when he is alone. Treat-holding toys from the pet store will keep your dog occupied and happy, especially if you vary the surprises inside. If your dog notices what is on TV, try clicking around for a program that will hold his interest.
Some dogs like to watch other animals or nature documentaries.
You might even be able to get your rabbit to play a game of catch with you by rolling the can back and forth across the floor. Some rabbits enjoy munching on a little patch of wheat grass planted in the bottom quarter of an old milk container. Guinea pigs and mice like toys they can hide in. Cylinders from rolls of paper towels and toilet paper are favorites of mice. Connect several cylinders together to create a maze.