Dynamic rubber ducky in tub?

What I am trying to do is have a rubber ducky in a tub that is an object that collides with the camera/character and the walls of the tub. So when the camera hits the rubber duck(s) i would move away and bounce around the tub. It would be especially nice to have the duck create ripples but more importantly would be drag/inertia with possible rotation. I know how to do this in Maya but no idea yet in Unity.

Any help would be greatly appreciated!!!

Cheers,

Gary

I’ve been looking at this recently, might well be
along the lines fo what you’re looking for:

http://forum.unity3d.com/viewtopic.php?t=4685&postdays=0&postorder=asc&start=0