49 Brilliant Garage Organization Tips, Ideas and DIY Projects - Page 31 of 49 - DIY Crafts. This looks like Bouillon Cube jar lids screwed to the board, so jar part can screw onto the lid. I've also seen done with baby food jars.
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.