I just got a "battle rope" (50' feet long and 2" thick). There are probably 30 different moves you can do with it (lots of ideas on Youtube). Great whole body workout.
My cardio is not what I wish it was, so I would play with the rope for a minute or two several times throughout the day. That way I got in about 20 minutes with the rope rather than working out with it once for 5 minutes. To do this, you need to be able to have enough room to set it up and leave it out. It helps to have a dining room/living room with very little furniture.View Thread