If you back out far enough to see some of the shape the atoms are forming, you are too far away to see them. So I made them reflect a common tree. And like looking at shapes in the clouds, it's easy to see things in the tree as well.
This image rendered for three days on 4 computers before crashing, and losing all the work. I rendered again at wallpaper sizes only, just to get it online. I may never try rendering a commercial version of this one again.
Moving between servers, I expected more broken scripts. Turns out I found most of the broken ones trying to upload this image. They are all in my administration area. (uploading checking sizes and such.) Hopefully you can see this.