Was just wasting a little time looking at some of the polymer clay blogs you see in the column to the right, and was impressed (apt word choice, if I do say so myself! (g)) by Ponsawan's homemade texture sheets.
As you might recall, I've done some of these, myself, but I haven't given it another try since my first effort. After seeing these, I'm inspired to give it another go! :o)
I also want to try carving designs in cured sheets of clay. They wouldn't necessarily be texture-sheet style designs, though-- more of "stand alone" images. We'll see how it goes (when I ever get around to trying it).