'''石制大箱子''' is a storage item that holds up to 70 different types of items, which is nearly double that of the regular [[ 石箱| 石箱]] which holds 36 different items. Using it on a regular [[宝箱]] or 石箱 replaces it, keeping the contents inside and dropping the old 宝箱. The crafting recipe can be purchased from the [[矮人]] in [[ 矿井]] after acquiring the crafting recipe for the [[石箱|石箱]] from [[ 罗宾]] by completing the special order '''Robin's Resource Rush'''.
When opened, 宝箱 have a color bar above their inventory window which allows players to select a different color for the 宝箱, the same as the smaller variant. This can be changed at anytime without cost. There are 20 colors available to select in the color picker, plus the original brown color.