This dissolve effect I made with EditableImage.
Works with any MeshPart as long as it has a texture and a SurfaceAppearance (I was planning on automatically inserting one if there are none but sadly scripts cannot edit SurfaceAppearances). Some meshes with weird UVs, such as the doughnut in the video, also looks very weird.
It gets laggy with only a few objects but I am using a laptop from 2014 so I don’t know the performance on more modern computers.