What is special about polyhedra?

What makes polyhedra so unique and intriguing? Are they simply geometric shapes, or do they hold some deeper significance in mathematics, physics, or even finance? How do their properties and characteristics compare to other shapes? And what applications, if any, do they have in the world of cryptocurrency and blockchain technology? As a finance and cryptocurrency professional, I'm curious to understand the relevance and potential significance of polyhedra in our field.