found this today and it somehow quite funny to draw..
I don't know if it is for anything useful cause you always draw on z=0 but the lines are looking quite nice and connect together in some kind of foam or net
I'm talking too much, try it out
http://www.everyday3d.com/unity3d/drawing/
hope that's not an old everyone-knows-it-except-me thing 0.0
Replies
Some results:
http://mrdoob.com/projects/harmony/#shaded
edit: ah it seems this link is also visible in the bottom left corner of the 3d app