Every item dropped is transferred into a special storage of 169 slots (no transfer will occur if the storage is full).
The storage content can be viewd via command
/ourcraft list
but the items themselves can not be accessed.
The storage content can be removed via command
/ourcraft clear {Item}
if item is empty then the whole storage will be cleared. Otherwise only that specific item will be removed.
At a certain time of the day (default of 24000, can be configured in the server config), all items in the storage will be shared and send to each player's inventory, and they will receive a gold pickaxe to honour their work. Exceed items will stay in the storage.
Exception:
The armor, tools, weapons, anything that has durability will not be transferred.
This is just a mod that I used to test 1.17, made within 5 hours. Enjoy!