The plugin Fur 2, disperse a simple figure (line or circle, configurable dimensions/thickness) over the whole image.
Each figure can be filled according to two modes:
Solid: The figure is filled with a single color (determinated by the figure's center).
180 deg: Image source content is kept; but rotation of 180 degrees around the figure's center is performed.
Example 1: A quick glance of the effects available ...
Line, 180 deg
Example 2: Here, image's layer was duplicated; and then we worked on the new layer. First we used the plugin Fur 2, with the option "Transparent Background" checked, and a density of 75%. Then we applied a Layer Style (Drop Shadow) within Photoshop.