OctopusEffects, #Blender Quick tips: create rocky ground using particle system in Blender 2.9 Timestamp 00:00​ Introduction ...

Use Geometry Nodes to create particles, use node shader to partially cover the object and Use Modifier to create chaos of particles. Requires Blender version 2.9 or later Subscribe!

So he shows how to use Blender to create specific textures to produce things like wood-like or leather-like surfaces, for example. You can see how it works in the video below.