A severed mosquito proboscis can be turned into an extremely fine nozzle for 3D printing, and this could help create replacement tissues and organs for transplants.
I’ve linked to a decent write-up on Tom’s Hardware, but New Scientist covered it last week too.
Source paper: 3D necroprinting: Leveraging biotic material as the nozzle for 3D printing (science.org)
More interesting facts: you can use a human penis as a medium-resolution 3D printing nozzle