Why do wizards use orbs?

Have you ever wondered why wizards in fantasy literature and media often make use of orbs? Are these magical spheres simply aesthetic accessories, or do they serve a deeper purpose? Could it be that orbs possess unique properties that make them ideal for storing, channeling, or manipulating magical energy? Alternatively, might they hold symbolic significance, representing wisdom, power, or the interconnectedness of all things? As a keen observer of the magical world, I'm curious to know – what are your thoughts on the reasons wizards use orbs?