【How-to】How to make elephant toothpaste with baking soda

Coca-Cola bottle, one ½ cup of 6% or 20-volume hydrogen peroxide (purchased from a beauty supply store), 5 squirts of dawn dish soap, blue and red food coloring, 1 teaspoon of active yeast dissolved in 2 tablespoons of warm water, one funnel, and a tray and towels to catch the overflowing toothpaste.