SketchUp is Free!

YES!

Google just announced that they are releasing a limited version of SketchUp for free!  Meanwhile, you can visit the 3D Warehouse to find everyone else’s (geographically-tagged) creations.

SketchUp is really easy to use.  I suggest watching a few of the videos to get started and then dive right in.  I made a Sonic Screwdriver 3D model in a few hours last month.