A desk storage system for efficiently organizing various office implements using modular components assembled in one of a plurality of configurations according to user preference. The desk storage system includes modular components attachable to one another by connectors mounted on the periphery of the modular components. The connectors enable lateral and, selectively, angular tilt adjustment of adjacent modular components. A strong, rigid shelf is also provided for supporting the modular components, while also allowing the lateral and angular tilt adjustment of the modular components. The system further includes stacked trays selectively adjustable relative to one another. The trays are stacked using stacking brackets readily engageable between paper trays, while providing a strong, rigid connection.