Does your city have any tram/bus/metro stops that are voiced differently when announced than the others?
E.g. in Gdańsk in Poland the Opera Bałtycka stop is sang to the melody from Bizet's opera Carmen by a professional singer and their Miszewskiego stop is voiced by a small girl because near this stop there's a puppet theatre.
or in Warsaw many bus lines have all the stops voiced by small children every year on Children's Day.