Kylie Homes 10/29. DIY costumes have been on the rise as a trend in the past few years. This is mainly because millennials love to save money and love the convenience of finding tools and things they need in the comfort of their own home. They also love the original, creative side that comes with making the costumes themselves. That's why article sites like Buzzfeed, Popsugar and even Huffington post all have posted articles about DIY, at-home, creative costume ideas for their readers.