InfiniteShulkerBox: Infinite Space in Shulker Boxes
This modification fundamentally changes how containers work in Minecraft by removing the restriction that prevented Shulker Boxes from being placed inside other similar containers. Now you can create truly infinite storage systems by placing one Shulker Box inside another without any limitations.
The distinctive feature of this modification is that it works entirely server-side. This means you don't need to install it on the client - installation only on the server is sufficient for all connected players to utilize the expanded storage capabilities.