Tool breeding is a Lekling science. It combines a firm understanding of life and energy, and a strong mental grasp on alchemy. Chemicals and other mysterious ingredients are combined inside of a mold, and then after some time passes the mold is opened and inside is an organic, fleshy tool. These tools often have complex functions, with parts driven by muscle and sinew rather than springs and hinges.

These tools can have many complex functions, they can be used to filter water, or perform tasks such as rolling up rope or chain. Sometimes they are made into weapons, crossbows spitting bits or swords with bone blades.

Most races find the science disgusting or off putting and Leklings rarely bring this technology into large cities where others might see it.