"Bamboo spiral: This gives an unusual auditory experience to anyone who ventures into the ‘forest’ of hanging bamboo poles - a version of surround sound!" - Sounds and Senses ≈≈ it's like an enormous wind chime.
25 Dorm Room Tips, Tricks and Hacks Every College Student Needs To Know
DIY Turn PVC pipes into a playground musical instrument. I wish this had the instructions with it, but I might be able to figure it out. This might even work as a service learning project for the playground