Abstract: A tool storage container is provided, wherein the container includes a support shelf for resting atop and covering the uppermost platform surface of a ladder. A removable, adjustable hook is attached to the support shelf extending outward, and can clamp the ladder's uppermost platform between the hook and the sidewall of the container. A plurality of separate compartments neatly organize supplies, such as tape measures and screw drivers. A swing-out parts tray further provides easy storage and retrieval of nails, screws, and the like. A hinged lid and a carrying handle in order to accommodate use as a conventional tool storage container.