Storage Tower - or 30 gallon tote 'book' case. Optionally could use cleats on side for shelves between units. Two of these with horizontal cleated door would be a workbench. Expandable modular storage.
This article will show you how to build simple and inexpensive shelving to hold plastic storage containers that will organize your garage in one day. Description from pinterest.com. I searched for this on bing.com/images