A beer keg bathroom mirror is a quirky and rustic decorative piece that repurposes a beer keg into a stylish and functional mirror. The design typically involves cutting and polishing the front of the keg to create an open frame, with the mirror glass carefully fitted inside. The stainless steel of the keg adds a rugged, industrial vibe, making it perfect for man caves, bars, or bathrooms with a modern, rustic, or industrial aesthetic.