http://www.scriptspot.com/3ds-max/scripts/randomixer

 

RandoMixer is a powerful 3dsMax plugin to automatically generate multiple variants of your scene, model or character and manage them within a collection of states.
Moreover, it’s an unrivaled tool to randomize transforms and materials, swap objects around, scatter them, create combinations between different sets of elements, automatically switch active lights and cameras, and a lot more!