> I often find it's difficult to pick the correct tool when represented by a pictures of animals.

Maybe this could be solved by a very careful choice of the animal.

For instance, a very skinny Llama could be used for the "Line" icon. To further enhance the uniqueness of the icon, I could replace the text "Line" with the animal's name, such as "Joe". So every time you saw Joe the Llama, you would instantly know that was the line drawing tool.

But I suspect the world may not be ready for Llama UI technology at this point in time... Maybe in a few years. :)

- Michael