Suspicious rattle noise in the dashboard

[Gunnersjjang]

 I can here plastic rattle noise from Dashboard when I drive a little uneven road. I'm not sure the position is center or passenger's side.

I could not record the noise but this youtube site from Toyota Camry has a similar case.

It's annoying when I think my Yaris is just one year-old car.

Would it be helpful to go to dealer at my next service, or any solution can be done on my own? Thanks. 

[YarisHybrid2016]

Rattles are normal from what I can tell.

Mine can rattle quite badly some days. It seems to be mostly related to temperature, and doesn't always do it.

The sound is anywhere along the dashboard, from floor height to top of the head unit for the radio. As soon as I move my head, it moves. No idea what is causing it, but I've learned to live with it (if it's the only "problem" I have with the car, it can stay!).

Part of the problem is the car is so quiet, even slight noises seem louder. Just turn up the music!