Sun Jifa should be an inspiration to us all. After he lost both of his hands when a homemade bomb exploded, he spent the past 8 years making prototype bionic hands until figuring out the system he has now. It looks awesome and they work wonderfully.
Sun couldn't afford the bionic arms from the hospital so he decided to create a pair of arms with scrap metal that worked with a bunch of different wires and pulleys inside the metal. Sun says:
"I control them with movements from my elbows and I can work, love normally and feed myself just like anyone else... The only drawback is that steel is quite heavy so they're tiring to wear and get hot or cold in the extremes of summer and winter"