As it states in the logo at the top, that only old people didn't see, I also do a lot of 3d modelling for game development and modding.
I use the Google SketchUp software to do this, its fast easy and simple to use.
These are some of the things that I have made using the software.
I have used this software in school to help with graphics, its quiet easy all I do is think of something to make and make it. It really helped me last year, I'm not a awesome drawer but I can sketch a concept and make it right in front of the teacher. Not only that I can easily change what I don't like about it.