I wish I could say that I came up with this one on my own but it is based on this tutorial. Obviously tweaking was involved. If you are going to try this, you probably should know that the 'crackle' variant slows down renders. A lot.
The wallpaper version is available at the preceding link.
Today's Gratitude Item: Anchovies on my home-made pizza. The experience will certainly be repeated in the coming months.