This tool creates a random assortment of blendShapes within the specified limits and creates a setDrivenKey to cycle through them.

Here's a demo Video of the end result.





To use it, select the mesh you want to use and press the "create wind shapes" button. It will create extra attributes on the new shapes to control the cycle of blendShapes.

It creates two so you can paint blendShape weights on the masterWind shape if you need some of the mesh to remain static. If you don't need to paint weights then just delete the masterWind shape.