Enhancements - Enchantments for Containers.
People have often wanted a way to "upgrade" chests/shulker boxes, and this could be just that:
These following Enhancement ideas are something that I think many people want, and could also be applied to the Bundle whenever it gets added.
Capacity - Very simple, just doubles the inventory space of a container.
Magnetic - Items picked up go into the shulker/bundle/chest automatically. Very useful for large projects. If a chest/shulker is filled with a specific item, then only that item will get put into that chest. This allows for ease of sorting.
This is something a lot of players have wanted in some capacity for a long time, and it would definitely be incredibly useful. There could of course be more enhancements later, but these would serve for now.