We have covered plenty of interesting robotic grippers here in the past. Rice University researchers have found a way to use dead spiders’ legs as raw material for robotic grippers. They “tapped into the hydraulic infrastructure of dead spiders using a needle.” The legs can be extended with a puff of air. Releasing the pressure retracts them to grab objects.
Assistant Professor Daniel Preston and his team even coined a new term for this field, Necrobotics.