Little more than the essentials are found within these shipping container-sized habitation modules. These were popularized during the initial spread of settlers that spread from Coprates as an inexpensive solution to a "Where do I live?" problem. Made from an airlock, aluminum, a few electronics, furniture and glass for simple windows. Air was supplied through a rudimentary pressurized tank created from the aluminum which can not accommodate more than a few settlers. On the positive side, these simple shelters were much easier to maintain than habitats.