Thanks, but that was not the answer I was looking for. I was only using zBrush, Blender and Poser as examples. What I said was that I was looking for an appropriate (generic) icon for a folder containing shortcuts to 3D Graphics applications such as these.

I am looking for a folder icon that best reflects the fact that it contains shortcuts to 3D Graphics software. That sounds pretty vague I know - I went to the Icons gallery, but could not find any means of searching within them. Am I missing something ? ... When I say the icons gallery, I am talking about what I found in WinCustomize... am I on the right track ?

Look in Icons gallery here:

https://www.wincustomize.com/explore/icons

And Object Gallery here (not "Object Dock Backgrounds" Gallery):

https://www.wincustomize.com/explore/objectdock#

In the Object dock gallery dock backgrounds will be mixed in.

To search within either one of them, go to the gallery and then type a word or words in the search box at the top right of the page about 1/2" from your login name.  Keep an eye on the little icon at the left of the search box - if it changes to "All" you'll be searching all of the galleries.

Here's what a search in Object Dock for "3D" yields:

https://www.wincustomize.com/explore/objectdock/search/3d

Easily solved. Make a sample or two and post to here. At least a starting point.