Consumers will get a break from having to wrestle with tough-to-open parcels this holiday season with the advent of “frustration-free” packaging from Amazon.com. The online retail giant will try to cut down on the sheer volume of packaging materials used to ship purchases from the site. The effort begins with products from 19 manufacturers, including software powerhouse Microsoft, and toymakers Fisher-Price and Mattel. The news will undoubtedly be welcomed by parents ordering some of the more popular toy items this holiday season.