27. "Waterdrop" image
This trick would require two water tanks. The 'pool' of water will be the bigger ones, and the dripping source will be smaller. When the water drips, stay focus. One thing to note is that you should not set it up as a continuous stream, as you might miss out on that important 'splash' you are aiming for.
To make the solution seem thicker, you can mix in some Xanthan gum. The mixture would result in a longer splash and 'tail'. Also, pay attention to your shutter speed and light source! Try making various colors for different droplets or applying hues to your images once you edit the picstures. Color saturation might also give you a better image than you originally shot.