The first precedent that I chose is a Burr and velcro becuase the ability that a Burr has to stick to things with their spikes was used to design velcro
Lotus leaves stay clean because water goes in a ball and rolls off, This is used in paints and coatings that repel water and dirt
Just as snails have shells in a spiral to maximize space humans have used that concept in architechure to maximize space and efficiency
The honeycomb design is used in many types of helmets as it is lightweight and very strong which makes it good at absorbing impacts
