The “essential” survival gear is whatever you can use to get water, shelter, and food. In a survival situation these are the most important things.With food, water, shelter, fire, first aid, proper clothing, and a way to navigate you should be able to survive and even thrive in the outdoors. Just remember that there are no second chances, no repair shops, no doctors in a survival situation so always go for quality and durability when buying survival gear. Food & Water Water is the most important thing in a survival situation. One of the cheapest and simplest is water purification tablets. Of course, you must have something to hold water in though so make sure you bring at least a cup if not a canteen….