Water Droplet Photography
Black Acrylic Glass
You will need a black velvet background and glass. It will be important to keep the glass clean of fingertips, so wearing gloves or holding it by the edges will prevent that. It can be bought in different sizes, and can cover up certain things not wanted in the picture.
Light Painting
You will need a slow shutter speed to be able to capture the movement of the light that will be able to create an image. A high ISO will also be helpful because it will be night time and you will need to be able to capture the surroundings of the light. You can use a light source from a sparkler or a flashlight or glow light.
Bubbles/Planet
You will need a black background or a contrasting background to get the colors of the bubble to be vibrant. You will have to blow a bubble and time it properly and take the picture before the bubble pops. A high shutter speed and a big aperture will be necessary to capture the bubbles color.
Focus Stacking
You will need a camera with a large focus and a high shutter speed so you can hold the focus and make the picture sharp. A big aperture and ISO will also help to get the sharp image you would like to receive.