I will use the sturdy apple box for packing. I cut off and discarded the lid, so I plan to ship it with cardboard as a lid, as shown in Image 5. I will fold in the protruding parts and tape the four corners to prevent the contents from coming out → Images 6, 7, 8. Image 1 → The "Kune Kune" and "Doubutsuen" (Zoo) cases do not fit everything. (I tried putting them in the "Kune Kune" coaster case in the foreground for now, but I determined it was impossible given the remaining number of Duplo blocks.)