Materials needed: Paint or dye (eg. food-coloring, pen ink), (fluffy) cotton balls, glitter, a glass jar or bottle. How-to: 1. fill the jar/bottle with water 2. Put the ink or dye into the jar/bottle until you get the color that you want. 3. make layers of cotton balls and glítter. Like this: cotton, glitter, cotton, glitter. 4. shake.