Quote - Yea, but not really what I am after.  That gives more of a rough or modified surface than things sitting on a surface, but thanks!  Even a surface under a surface sticking through I thought of, but it would be hard to not get spikes.

Not sure if you're a Blender user, but it can drop and scatter debris and other things where you want them with the grease pencil. Pretty cool stuff :).

Laurie