The shaking, opening and (faintly) closing of a water bottle. The crystal-microphone is attached to the water bottle the whole time. At first to the side and then later to the top. Tascam.
The dancing fountain scene at bugis junction where the nozzles shoot up the water one by one from the water jet pumps. Note that the water jet system for the fountain itself may consist of 4 patterns but this sound effect uses one of them. There are two extra patterns where the water from the nozzles goes to the center.