You can see through the progress of the slideshow(above) of screenshots above my process of creating the fourth widget. I started with a basic sketch of the easiest side to create which was the basic shape. Then I just went piece by piece removing sections until it turned into my final design.
Widgets 1-3&5-6
What is Inventor?
Inventor is a software that can be used for almost all aspects of designing. You start off by drawing simple sketches and just add on as your progress continues. It is great for designing anything from parts to just simple block letters.