Get a girlfriend and pound her box for an hour a day.
Do bodyweight circuits! By far the best and easiest way of doing cardio at home. An example would be:Bodyweight Squats x 15 repsDiagonal Lunges x 20Pushups x 20Mountain Climbers x 20Jumping Jacks x 60Don't rest at all between exercises. Then rest 1-2 minutes and repeat the circuit 2 more times. Your heart will feel like it's going to shoot out of your chest!
jumping rope sounds like a good idea as it can get pretty hard fast and doesnt require a lot of equipmentor get a bike and watch tv