What do you do with all your leftover cardboard boxes from Amazon ... from "Monster Hunter," is a great place to start: The axe prosthetic arm attachment from "Sekiro: Shadows Die Twice" is ...

Developed by Japanese robotics company exiii Inc., the HACKberry is a prosthetic arm that can be 3D-printed, and works like a real human arm by detecting when nerve and muscle tissue are stimulated.