Waistcoat combo. A utility finish with a simple set of suspenders or a heavily strapped harness with antique industrial buckles will make it. For Batman fans there will be a screening of the first episode of Pennyworth, which uncovers the backstory to Bruce Wayne’s butler Alfred, mikucosplay and how he went from being a former special-forces soldier to a dedicated servant of the Wayne family. With maybe about 10 minutes of prep time for a 5-minute booth session.