Making a wiggly cylinder. I`m having troubles finding the right phsyic kind

So what I have right here is a Robot head with a Antenna, and I want the black part of the Antenna to wiggle around as the Head moves.

Heres a GIF to actually show you what I mean https://i.gyazo.com/d85d60340b2cb260ccf7bf22cd8c5e90.mp4


I am having trouble finding the right physic type to apply to it. I tried out Cloth, but that only made the little Stick flew off as soon as the head moves. Rigidbody made everything move out of camera, even tho the head doesn`t even have any movement settings, besides looking at the mouse.

Is there even a way to make something wiggly? I didnt found anyone else asking about this, nor did I found youtube videos about it..