Shop It! The BPA-free set includes four dinner plates, four smaller salad plates, four cereal bowls and four drinking cups. It's made of odorless, thick plastic, which means cleanup is a breeze.

An odd thought crossed Katsuhiko Sakakibara's mind upon spying a mound of garbage made up of plastic plates, cups and containers at a local gourmet event: What if you could eat them? Sakakibara ...