the shower of an apartment i rented long ago had old-school spatter tiles with small random shapes remarkably similar to the ones in the article - very close to what's in the links below, although on the ones i recall, the shapes had smoother edges and more small white dots inside the shapes

with the hot water enveloping me in a multi-sensory white noise, i would stand there for time=n finding faces, animals and aliens in the splotches - very zen

http://thumbs.picclick.com/00/s/MTIwMFgxNjAw/z/9W8AAOSwmLlX5...

http://www.ebay.com/itm/Z-986-1Pc-Vintage-Ceramic-Wall-Flori...