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 Timestamp 00:00​ Introduction ...

You can make those with Blender easily. Using Blender to design a small object to send to a 3D printer is like using a bulldozer to build a sand castle. You can do it, but it’s overkill.