One of the best things about the LEGO community is that we can learn from one another. Here at BrickNerd, we like to share techniques that we see from builders all around the world. . .
Josephine Monterosso has put together a tutorial for some neat robot hands. Some might call it an illegal technique, but I think bending back handcuffs as joints is quite a clever technique, and it makes it easy to fit four fingers organically into such a small space.