Make an outdoor music wall. Ages Respond positively to transitions from desired to less desired activity when paired with music. Moderate movements to tempo (fast/ slow) and dynamics (loud/soft) of music heard.
"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.