A space for the man of the house is trending in design circles. The benefits of a “man cave” are grounded in research (it helps men regulate their emotions) and the attitudes of spouses (time away from each other is a good thing). Man caves may be located in an existing room, garage, basement or outbuilding. Once the man cave is built, it may not change for years. But stuff does accumulate. How to keep the man cave organized should be based on how it is being used. Its purpose may vary.