I BROUGHT 3 tons of trash to Singapore. When else can I make Singapore dirty,” said Tisna Sanjaya, laughing. Hop! He then jumped up on to the pile of garbage he brought.

Until April 24 you can see the plastic waste that fills the usually squeaky-clean exhibition hall of the University Cultural Centre of the National University of Singapore. All kinds of plastics—from potato chip bags to ice cream wrappers. Various types of bird cages are als