When you watch too many Sci-Fi movies, you end up wanting cool things like robotic arms. Thanks to MIT, you get something close. Supernumerary Robotic Limbs are robotic limbs that help you do things that may be uncomfortable or impossible to do otherwise. This particular shoulder mounted SRL assists in over-head tasks.
Its two arms have their reaction forces aligned with your spine. The whole system weighs about 10 pounds. There is a lot to like here. Give it a few years, and you are going to have something very special.