Having 3 arms is better than two. We have already covered a bunch of fascinating robotic third arm projects here. Createk’s Third-arm is also worth a look. It is a wearable 3DOF robotic arm powered by magnetorheological clutches and hydrostatic transmission.
This robotic limb comes with a 3-finger soft gripper to complete tasks. It has a carbon fiber and aluminum structure and can pick fruit, grab tools, and even play badminton.