Conveyor Belt, from Martian Dreams
Deep within the Martian Power Plant, a conveyor belt was designed to transport the coal mined by Coker to the mechanical man, Stoker, who helped feed the furnace that powered the entirety of Martian technology. When the Avatar arrived on Mars, the conveyor belt had long been broken, and the planet's technology had fallen silent. With the help of the seaman Captain Trippet, the Avatar was able to restore the belt's functionality.
The hero could use green Martian berries to communicate with the conveyor belt.