http://www.wondertouch.com/gloodle/gloodle.asp
http://www.wondertouch.com/downloads/gloodle/gloodle_103.zip

Gloodle A fun little app -- Now available for free!  
Gloodle is "doodle with globs" -- drawing using 3D shapes to create 2D images with a lot of richness, complexity, and depth. Gloodle is a simple app that shows some hint of the immediate feedback that makes particleIllusion so fun and useable: in Gloodle you just draw on the window and cool things happen. Not much thinking required. There are plenty of controls to experiment with, and (like particleIllusion) a lot of power hidden under simple controls.
You can create many interesting and organic images with Gloodle, with powerful features including:
Several symmetry options, including polar symmetry. 
The ability to import an image and "gloodle-ize" it. 
Create a "pattern" out of a drawing, then draw with that pattern (can create some very intricate images!). 
Add shading to a drawing (or portion of a drawing) to simulate depth, or use Chromadepth coloring (if you have the right 3D glasses!). 
Import your own shape images to draw with.