how do I parent to a soft body? I have a cube that's a soft body falling down some stairs.  I want to put a little sphere inside the cube and have it stay at the center of the cube while the cube falls.  How do I set this up?
You could parent the child object to 3 vertices of the soft body object: Select the child, shift select the soft body object, go into Edit mode, select 3 vertices, press CtrlP &gt; Make Vertex Parent, and the child will follow: