Back in high school CAD class I got bored and decided to create a bob-omb. That turned into an army of bob-ombs, and then an army of bob-ombs with a bright green Mario 64-style background, and later a chain chomp, goombas, a life mushroom, a warp pipe and a two-dimensional cloud.

Most of the models were created in AutoCAD 2006 and it was rendered in 3DS Max 8. And it makes a pretty good wallpaper.