No one knows for sure when people began to wear clothing made from natural products other than animal skin, but the earliest fragments of yarn and fabric were discovered in Switzerland and estimated to be roughly 7,000 years old. Natural yarn fibers available to ancient civilizations, including cotton, silk, bamboo and wool, are still available today but in a rainbow of vibrant hues that were not readily available back then. Yarn aficionados can find a wide array of new knitting yarn and other knitting supplies on eBay through reliable sellers. Some merchants even offer vintage yarn that has been stashed for decades and never used. Diehard knitters may be interested in a yarn lot, offering many different skeins in one color or a collection of similar skeins in several colorways, which means less time spent yarn shopping and more time spent knitting. Popular brands, such as Bernat, Red Heart, and Lion Brand have been making quality yarn for decades.