need are glow sticks (there are a host of different places where you can buy them in bulk or you can even find them at the dollar store), jars, kitchen gloves, scissors, and something absorbent like paper towels or toilet paper.
second, put the absorbent paper into the jar. if you wish to create layers with different colors, then only don’t fill the jars all the way.
third, with your gloves on, cut open one end of the glow stick and poor the glowing contents into the jar.
repeat as many times as you wish. it’s that simple!
note: there are a lot of people who have said mixing water in the jar helps 