The Primitives folder within the Elements folder contains basic shapes (or Primitives) you can use as basic models for testing.
You can animate, transform, and apply materials and effects to Primitives.
Asset browser: Primitive Element assets
Note Use the polySphere element in the Asset browser when you require a sphere model for Physics solves (such as Rigid body, Joint,
or Ragdoll). The Elements Sphere element has geometry that may produce unpredictable results.