Tidbits from the Tremaynes: What My Boy-Toy Will Do For Me. DIY: Lumber Storage System Tutorial ~ This is awesome! The slots allow you to organize horizontally & vertically, keeping lumber off the floor & similar lumber together & it's on casters!
If the garage does double duty as parking space and work space, a rolling workbench is essential. It lets you convert your garage into a workshop quickly and rolls up against the wall to restore parking space.