You think you need to shine brightly to advertise your product? Heineken has another idea. They switch off their billboards and send people on a glow-in-the-dark-starhunt to win a stargazing session in a city. Way to go, Heineken!
https://www.dandad.org/awards/new-blood/2023/heineken-design-bridge/4315/heineken-dark-skies/