equipment
What is this tool? What is it called and what is it for?
It's like a steel angled spatula with a cutting end and holes on the tip. It's not big (see the finger for reference), little more than a centimeter wide in the tip. The cord in the photo is just something in the floor.
I've tried to find this in Google Images several ways to no success.
As you probably know, induction burners produce an alternating magnetic field that induces a current in the cookware. This process can produce attractive and repulsive forces as well that cause vibrations.
The problem can be caused not only by poor sandwiched construction but by an uneven bottom surface, or loose parts or lids.
I have read that some people have successfully used silicon baking pads to dampen the sound.
This page has some useful information on the subject:
My first thoughts are this which is actually a scraper but I wouldn't use a metal scraper in a bowl. Being flexible plastic, it flexes and molds itself to the inside of a bowl and allows easy removal of dough.
Best Answer
It's a zester, for getting zest off of citrus fruit.
The photo from that Wikipedia article shows it in use: