A quartet of designers have developed a series of machines that turn seafood waste into a biodegradable and recyclable bioplastic. What the machines do is they transform the shells of crustaceans into a paper-like material that could act as a sustainable alternative to single-use plastics. Each one of the machines has the capability of turning crustacean shells into different objects. One machine, for instance, transforms shells into anti-bacterial blister packaging. Another turns the seafood waste into food-safe carrier bags. A third creates self-fertilizing plant pots. All of them, however, manage to make these objects without adding any additives in the process that could affect the recyclability of the final product, which makes these machines especially viable for the circular economy.