You can craft a "Bone needle" by using one "Bone meal"

Bone needle is an item required to make a Jar of Blood.


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A Bone needle with string in the Sewing Machine.

You craft a Bone needle using one piece of bone meal in a crafting table.


Punching a mob with a Bone needle (with a bottle in your inventory) gives a Jar of BloodThey are also used in sewing together body parts in a Sewing Machine