CGDive's The Ultimate Ball Rigger Addon builds a ball rig for animation in Blender through a single-click workflow. Select your ball model, or several meshes if the ball is made of multiple parts, then click the Generate Ball Rig button. A rig matching the exact size of your model is created. Parent the model to the rig and start animating.
The addon includes the standard controls of a ball rig: a root control, a center of gravity control, a rotation control, and top/bottom squash & stretch controls. Its distinguishing feature is the Adjustable Squash & Stretch control. By default the two stretch controls sit at the top and bottom of the ball, which suits 2D bouncing ball animations and other simple scenarios. You can also adjust the direction of the stretch, which makes animating bouncing balls in 3D space easier.
The addon works with Blender 4.2 and later. A short tutorial covering how to use the addon, along with an overview of its features, is included with the product.