Houdini Boxes Rolling Set-up
This is a Houdini implementation of my previous Maya Boxes Rolling Rig . In this set-up, I also switched in a Rubber Toy to see how it would look. The path of travel was created with a Solver SOP that advances the position with a noise animated over time. Another Solver SOP handles the rotation of the box/rubber-toy, and driven by the accumulated distance travelled.