Ninjas used a system called Goshiki-mai, meaning Five Colored Rice, in which rice grains were painted red, blue, yellow, black or purple in order to leave coded messages or trails.
Ancient Egyptians created artificial plants. They crafted fake flowers and garlands from materials like painted linen, papyrus, and thin metals to decorate temples, tombs, and homes. This practice dates back to around 2500 BCE, making Egypt one of the ea