A stability ball is a great addition to standard workouts as they help core muscles to activate. Core is what supports your posture and daily functions, but often overlooked and underutilized while working out.
Rotational grazing is another way to help let the grass recover. By moving the cattle from pasture to pasture over a certain period of time will help the grass grow. It can be time consuming and labor intensive but in the end it will mostly pay for itself.