DIY Rainbow Crystal Forest Materials: - Pipe cleaners (various colors) - Alum powder (potassium aluminum sulfate) - Boiling water - Food coloring - Glass jars or heat-safe containers - String or thread - Pencil, chopstick, or skewer (for suspending) - Scissors Directions: 1. **Shape the trees:** Take the pipe cleaners and twist them to form small tree shapes. Be sure to trim the branches so that the tree fits comfortably inside the jar without touching the sides. 2. **Attach hanging string:** Cu