synthetic vibes

Materials:
1) Nylon raincoat with hood & strings for tightening/loosening the hood.
2)YOU.

Setup:
Put on the raincoat with the hood up.

Performance:
Hold the hoodstrings tight with one hand while plucking the strings with the other.
The effect may not be detectable to the outside world, but you - with the hood on - are in a prime locale. The vibrations travel through the strings and resound within the hood "membrane".
The hood is comparable to the body of a stringed instrument like a violin or guitar. It acoustically projects the sound of the vibrating strings as they resonate. Having your ears very close to this membrane means you'll be able pick up on these sounds and can vary the tension on the hoodstrings to play different pitches. You have just made your raincoat into a stringed instrument!

If needed, you can hold AND play the strings with one hand, leaving the other to scratch the outside of the raincoat, or "spin nylon" if you will. I was able to produce DJ-like sounds among others.

The techniques above illustrate how to make the sounds, but the piece's composition is improvisation.

Play and repeat.
Enjoy.