A blangkon is a type of hat that comes from Indonesia. It is made from a rectangular piece of cloth that is tied and folded in a certain way to make a cone shape.
Imagine taking a rectangle of paper and folding it to make a cone shape like a birthday hat. That's kind of what a blangkon is like, except it's made from a special fabric instead of paper.
Blangkons are often made in bright colors and patterns and are worn for special occasions like weddings and religious ceremonies. They are an important part of Indonesian culture and show the wearer's respect for tradition and customs.