Customiser: Stanley tray box divider platelet

Stanley tray boxes come without those essential separator plates. While they can be purchased as extras, they are often needed when none are available. Cutouts from strong cardboard will usually do - but I discovered the utility of 3d-printed versions for testing printer and slicer settings, especially in combination with new filament material, when I finally got to the point of acute shopping cart token saturation - those I printed for quick testing before. I also dislike printing objects for t