LushStack

Items of the same kind that lie close together can be merged into one entity that holds far more than the standard 64-item limit. The mod uses Long data components to count up to billions of items in a single stack, which keeps the world from filling with loot piles that slow the server down. When a player picks the stack up, it is split back into ordinary 64-item stacks that fit the inventory.

Items within an 8-block radius are drawn toward each other with a custom magnetic animation, and floating labels show the item name and its exact count in gold. Automatic redistribution on pickup keeps the inventory usable. The mod runs on Fabric for 26.1.2 – 26.2 and needs both the server and every player to have it installed, since the environment is client and server.

LushStack is released under the MIT License and is not open source. Its files are published for Fabric only, so players on other loaders cannot use it, and the mod's code can be read and reused under the terms of that license.