Since the first pi came out I wanted to build an exoskeletal suit. Just thick 3D printed ABS (or PLA) with small steel supports and a the rediculous number of stepper motors. Along with a huge Li-ion backpack and a pi of somesort.
Keeping the suit which is just framework basically, 5% lager than the body and jsut have it mirror the movmeents you do inside of it with pressure sensative pads, making it want to keep you direclt in the center. So when you mvoe your hand it touches the inside of the palm. It moves down with your hand until the pressure eases off. etc etc.
Of course its entirely theory as I wont have the money for usch an endevour for many years to come. Would certaintly be a fun project though