How about using magnet+ (under 'effects' in the motion module) to disturb the surface initially, followed by a wave (under effects too).
Your drops/drips could be produced with simple geometrics, using magnet+ or deformation>by surface to hold them to the cup's sides as your 'gravity'(dynamics) effect pulls them down untill they drop off the base & into the waters surface, which is highlighted by use of small waves once again.
Hope that helps...