Rock in the front window air duct - how to get out?

One of my kids found a nice rock - placed it on the dash. I did not notice, busy day.

Long story short I now have a rock in the front air duct. Rolling from side to side in narrow turns where the car leans a bit.

It is benign. No systems affected. It is just silly. And very persistent. I've named it the body roll indicator.

How do I get it out without having to disassemble the whole dashboard?

It is a 2016 Fabia Estate.

Edited 2 hours ago2 hr by Skoda-NDB