A child is throwing confetti at another child who is standing in front of a banner.  
An artist is throwing colored chalk at a model who is standing in front of a canvas.  
A performer is throwing glitter at a spectator who is standing in front of a stage.  
A contestant is throwing flour at an opponent who is standing in front of a podium.  
A prankster is throwing water balloons at a friend who is standing in front of a door.