Gray Bundle
minecraft:gray_bundleA gray bundle is a dyed variant of the bundle, an inventory item that stores a mix of different item types within a single slot. Items take up space based on their normal stack size, so items that stack to 64 fill only 1/64 of the bundle while non-stackable items fill it entirely. It is made by combining an undyed bundle with gray dye.
FAQ
How much can a gray bundle hold?
A bundle can store only what would otherwise add up to a single inventory slot, equivalent to 64 stackable items or a single non-stackable item.
Can I put bundles inside a gray bundle?
Yes. Each nested bundle consumes 1/16 of the outer bundle's capacity in addition to the space taken by its own contents.
Why does the bundle only come in 16 fixed colors instead of custom dye mixes?
It is considered more important that a player can quickly glance at a bundle's color and judge its contents than to allow unlimited custom colors.
Can a gray bundle be placed inside a shulker box?
Yes, bundles can be placed inside shulker boxes, though shulker boxes themselves cannot be placed inside bundles.