Exercise Ball / Exercise Balls Pull Up Bars / Chin Up Bars
Exercise Ball:
Gym balls, sports balls, resistance balls or body balls — are used in physical therapy and exercise. They are elastic rubber balls with a diameter of usually 55 to 85 cm. if your looking to strengthen your core an exercise ball with DVD is a great an inexpensive Home Gym.

A chin-up bar or pull up bar is usually a smooth horizontal metal bar, often a pipe, sometimes with foam grips held solidly above ground by a wooden or metal frame or inside a door jam.
Play Ball To Get Fit!