upbeat spear
Add the Skyblock UUID item protector, almost every Skyblock mod has it, (like Firmament and Skyblocker). It prevents protected items from being dropped, traded or even sold but also allows you to move the item in your inventory, storage, and other containers safely. It is incredibly useful. In the mods they often include a key-bind which when hovering or holding the item, it protects or unprotect it.
"But there's the inventory mod"
The inventory mod has slot lock which doesn't let me move my items, and it locks the slot not the item, which doesn't protect the item in containers. So it is different after all.
leaden dust