Corner Office: Transform the smallest of corners into a storage-packed office by utilizing wall space. Here, a wall-mount shelf becomes a desk with plenty of work space, and a board outfitted with wall-mount organizers takes organization vertical.
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.