Materials Borax powder (sodium tetraborate, laundry aisle) Boiling water Pipe cleaners (white strongly recommended for best rainbow color payoff) Deep heat-safe glass pie dish (Pyrex or tempered glass only) Pitcher or large heat-safe jar (for mixing solution) Food coloring: red, yellow, blue, green, purple Spoon or stirrer Scissors Part 1: Constructing the Tree (Skeleton) 1. Make the Trunk Bundle 4 white pipe cleaners together. Twist tightly from the bottom up to the middle to form a thick, stur