Lazy Susans have often been used in kitchen cupboards or other cabinets to keep things in the back from being hard to see or reach. But they can also be used quite well on workbenches, desktops and more. The galvanized lazy Susan organizer from Park Designs is a multi-purpose organizer
"Human Dimension & Interior Space" by Panero and Martin Zelnik -- one of the best "design for human ergonomics" books out there.
Table Saw and Router Workstation Plans - Table Saw Tips, Jigs and Fixtures | WoodArchivist.com
DIY Projects Your Garage Needs -DIY Folding Bench Work Table - Do It Yourself Garage Makeover Ideas Include Storage, Organization, Shelves, and Project Plans for Cool New Garage Decor http://diyjoy.com/diy-projects-garage