When I first got back from Australia a few years ago, I was staying at a crappy motel on North First Street in San Jose and I discovered a too called “SketchUp”.
SketchUp was sold at a pretty penny ($500!?) and I wasn’t sure I had the artistic talent to use it. I just sorta let it slide away.
I had missed the news that Google had purchased SketchUp, so when I saw that they had released a free, “lite” version to the public recently, I was overjoyed! A mac version is also in the works! Check out the tool at the Google SketchUp site.