To expand on what Mark said, shoebox size clear boxes containing like items, stored inside larger totes with labels with other boxes of similar or relevant content, with totes on shelves grouped by general purpose. For example:

2 shoeboxes full of flashlights and 2 shoeboxes of bulbs, batteries, and chargers in one tote, 2 shoeboxes full of electronic parts and 2 shoeboxes of electronics assembly supplies in another tote, and another tote full of electronics test/repair equipment, all on the same shelf. The shelf above holds totes that contain optical gear, the shelf below holds totes of audio/video equipment.

One can get a bit carried away with inventory control sometimes.