Abstract: A system of panel units is provided for creating diverse items for use in both planned and emergency situations in outdoor settings. A prime panel unit can be used to form a tent, bivouac sack, tarp, fly, sail, signal panel, ground cloth, weatherproof suit, backpack, or kayak hull covering. Quarter panel units can be used to form items such as bags, pack covers, ground cloths, and rain capes. Various combinations of units can be fastened together to create a wide variety of larger and more diverse tents, tent modules, flies, and other items to meet diverse needs.