This is another animated cycles material. I used a voronoi-texture that uses the generated texture-coordinates as its input.
To animate the cells I add a rgb value to the vector of the texture-coordinate output.
This works since the rgb values are vector values themselve and by animating the color you can shift the texture coordinates around.
you can download the blend file here
procedural parquet texture
checker multiplication texture
particle density volumetric material
hard edge displacement