Start by choosing a flat location with a mix of sun and shade. Set up the heart of the man cave with a legendary Aussie BBQ. Add comfortable and durable outdoor bar stools, and place an outdoor high table next to the BBQ. Set up an entertainment zone with a TV, pool table, or other games. Include regular outdoor tables for larger gatherings and a bar area stocked with local brews. Enhance the space with good outdoor lighting and decorative elements like fairy lights or rustic lanterns.