Materials Borax powder (laundry aisle) Very hot water (near boiling; adult handling required) Pipe cleaners (multiple colors) Clear wide-mouth jar or container Pencils or chopsticks String or twine Food coloring (optional, for enhanced rainbow effects) Spoon for stirring Instructions 1. Shape the Mini Trees Twist each pipe cleaner into a small tree shape: Form a straight trunk. Twist shorter branches outward as you move upward. Trim if needed. Smaller trees often grow thicker crystals. Using col