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 ...

How to make Cartoon 3D Cloud and rain animation in Blender 2.9 Timestamp 00:00​ Introduction 00:14 Create Cartoon 3D Cloud 01:21 Rain and Water Surface 02:02 Create Drop 02:33 Water Surface 03:08 Rain ...