food coloring of our choice (we went with the purple, pink, blue mix)
glitter (we used black but silver or white I think would be better)
To start in a cup mix our first color and add in glitter. Then place a bunch of cotton balls in the bottom of a jar. Rip them apart a little so they look more like clouds then balls. Slowly pour the water on top, add more cotton balls if needed. Then add another layer of cotton balls and add the second color. Keep going till you use all the colors you want. Note we pour our water slowly and the colors didn't mix. We also used the stick to push the cotton balls in more and mix the glitter around.