Free Illustrating Program
Inkscape is an exceptional free illustration tool! I just downloaded it last week and am already seeing all of the possibilities.
Dryad Tree Project
This freeware is so exciting, I've been playing with it for hours. It's a collaborative tree generator called Dryad. A fairly easy tool to create trees, save them as object files, and upload them to the forest so that others can use the models and add their own creations. Great idea!
More Color Sites
Need a color wheel? I found this Color Scheme Generator at WellStyled.com.
And here's an interesting color picker tool generated from sites, tags, and images at Colr.org
seamless tile generator
I had fun trying this site today. It's a seamless tile generator.
Free framing plugins
I found some wonderful free framing and graphics plugins at http://8bf.net/
The list is here: