Obligatory realistic rock…
A brief respite from 3D printing, here is a rock model that has been reproduced from photos of a boulder on a beach in the West of Ireland, rendered in real-time using the SketchFab viewer. The benefit of SketchFab is that the model itself can be presented and interacted with, rather than just embedding a static image from a given angle. I’m thinking of doing a Twitch stream or YouTube video to show how it was made, another task for the to-do list!
If you click on the image below it should open in a window where you can rotate the camera and view the rock from all sides
Pete Mc Nally's Blog 
That looks great Pete, very realistic. It looks great in the viewer, the materials are cool!
Cheers dude!
Please, Please, Please, make a You Tube video of how you made it, I’m sure a lot of people would really appreciate it, I certainly would