See examples of how to create random designs from manipulating and stretching the available parameters on a star object.
Mechanical gear shapes can be created easily in Inkscape. This tutorial will show you how, and give you an idea on applying filters to make the finished design look old and worn.
Link to Inkscape Filter Guide:
Just for fun, speeddrawing a fire breathing cat in outer space with a lightning bolt.
Create a grey planet and give it a red exploding effect.
See the wide variety of creation possibilities with the star tool.
Learn to use ducts, parameters, and the object tools for making your creations.
Make a square shape with patterned edges.