Nicholas Walker of Collège Montmorency has shared an interesting and instructive post on how to create a Moodle block that contains a image with hotspots that link to various parts of your Moodle course.
For those of you who would like a different approach for your users to navigate through your Moodle activities and resources, why not try it out?
You can read about his method at http://adte.ca/2011/09/navigate-moodle.