Water Drops:
To catch the water droplets you can just use a bucket and drop water with syringes. You could use different lenses but one site recommends a 200mm lens so it is far enough away to avoid splashes. A flash is a good supply to have since the light reflects from the water and makes it easier to see.
Bubbles/Planet:
To make the bubbles you can make them on a wet ring. You have time to set the focus and size of the bubble. You then can blow down a straw to manipulate the bubble and move the colors around. One website says that they use a 135mm lens mounted on a set of extensions including a 65-megapixel PhaseOne digital back and he has a 2x3 meter perspex dome to capture the different colors.
Focus Stacking:
To capture these images you need a steady tripod, a macro lens, and a super precision matt focusing screen for manual focusing. The lens that they used was 50mm f/2.5 compact macro. To get these pictures you have to take multiple pictures focusing on a different point each time and stack them all together in photoshop.
Light Painting:
To capture this type of images you need equipment like a tripod and a light source. The settings on the camera have to be fairly specific since you are taking long exposure pictures in the dark. To eliminate noise you need to keep the ISO low and you should have a manual focus so you can choose where exactly where you want too and it keeps the camera from having a hard time focusing in the dark.