No supports required—this modular storage grid mimics the classic Tetris puzzle, with each individual compartment measuring a minimum of 5 cm × 5 cm × 5 cm. Smaller compartments are perfect for thumbtacks, screws, and other small items, while larger ones can hold pens, screwdrivers, and similar tools. The units connect via clip-on fittings, allowing for infinite extension and flexible configuration. We recommend printing in a variety of vibrant colors.