DIY refers to building, modifying, or repairing things yourself without professional help. Archaeologists unearthed ruins of a 6th century BC Greek building in Italy that came with assembly instructions, dubbed an "ancient IKEA building". DIY has grown popular in fashion through YouTube videos, with over 1,000 videos demonstrating how to make clothes, room decor, and hairstyles. The benefits of DIY include lower costs, learning new skills, meeting people, and possibly earning income or having more options in retirement.