I've created a couple more examples of using Filter Effects in Inkscape or in SVG generally. This time I focused on feTurbulence filter primitive, which fills the filter effects area with Perlin noise.
Perlin noise is often used for texture generation and modeling natural phenomena like clouds and smoke. In SVG drawings it can provide uneveness and noisiness, that is otherwise hard to create.
Each of these six stars has a different feTurbulence based filter applied:
(click on the image for nice & large version)
This example file will be available in SVG format in examples directory in Inkscape 0.46 release. Should you want it already, or you don't want to download all of Inkscape, it's already available in SVN.