If you ever bought Bar Keepers Friend, you know it only has a taped label on the top. Once you open the label, the product gets exposed to air or worse, water. If you spill any water on top, the product inside is ruined. This situation also makes transporting the container trickier, it has to remain upright at all times. Why doesn't it come with a lid like every other powdered product?
This is HugoJones' model https://www.printables.com/model/752743-bar-keepers-friend-lidcap and I sliced it for an A1 mini on a textured PEI plate (to make a seamless top). 0.2mm layer height with a 0.4mm nozzle, 3 wall loops and 25% gyroid infill for strength. Printed in ELEGOO black PLA.
The fit on the original model was so tight it was very difficult to get off. I tried 103% X/Y which was too big. So this is 100.5% X/Y, which still makes for a tight fit, but not impossible. The sides are knurled to help with removal.