A giant billboard in the middle of Bukit Bintang, one of Kuala Lumpur’s most famous shopping districts, showcased the McDonald’s iconic Sundae Cone in all its glory. However, there was one problem – it was melting. The task was simple. People had to use their smartphones to spin the fan on the billboard, bring down the temperature and save the melting Sundae Cone. Agency: Leo Burnett Kuala Lumpur.