Organizer Tray - Spyder3D World
Tray with compartments sized for storing M3-M5 or similar screws, designed to be printed with a 0.4mm extrusion width (dividers are 0.8mm thick). Dimensions are 125mm x 125mm x 20mm without lid. You can of course scale it to any size you want, but you may want to scale the extrusion width to match.
If you’re in the US and need metric or stainless steel hardware, Trimcraft Aviation RC has the best prices I’ve seen and they have a good selection is sizes useful for 3D printers. Shipping is only $3. BoltDepot is a good option for larger sizes, you can order in any quantity.