4. The bobble on the top a winter hat has a story behind it. French marines used to wear a sailor hat with a bobble on top of it to prevent their heads from low ceilings. Later bobble on a hat helped in defining different branches of the military based on the bobble’s size, shape and color.
5. The diamond-shaped, pig nose symbol on a lot of backpacks is for hikers and climbers to attach a rope or a metal loop. Athletes can also tie their shoes without using their hands.
6. The dimple at the bottom of a wine bottle is known as a ‘punt’ and it is to prevent bottles from tipping over.