I am lucky with having three man caves.
One is in the basement. It is my Genesis Room with all things Genesis on the walls. It has guitars, Poster & pictures some signed by the members of the band. It also is my theater concert room with a projector.
Two is above the garage. It is my sports room with all things from the Baseball & football Cardinals, Jets, Blues, Bruins & Celtics. Some are signed or rare. It has a big screen TV with 5.1 SS
Three is out by the grill with my Saint Louis Cardinals Seats from the old stadium. Grill area & pool. It also has an outdoor projector for movies with 5.1 SS
As far as beer I am a simple person Bud (Cardinals beer) & Mich Ultra.