Cycle/Recycle (work in progress)

Following the theme of my creation in recent years – Existence and Disappearance,
I am thinking about how to practice Law of conservation of energy in a sound installation or performance.
In my residency at ISCP in NYC, I used recyclable found objects from Brooklyn and try to build a recyclable sounds.
But what is recyclable?

*A work in progress project developed from ISCP residency in New York, from March to July, 2018. Photos are taken in Open Studio event in April 28-29.