Step 1: Materals:
-A Metal Slinky. (NOT PLASTIC)
-A Foam Cup.
It Can Be Plastic, But Foam Is The Best.
Step 2: Preparation
Take The Cup And Insert It In The End Of The Slinky
Step 3: Listen (SHHHH)
When you drop the slinky it might damage the carpet/floor
Do not put the slinky right by your ear, it can hurt
Hold the slinky so it stays inserted on the cup