Nature fidget toy

So I was watching a video of jacksepticeye showing his fidget toys because he has ADHD and while I was watching it I noticed a comment that said "my father always kept a smooth rock on his pocket to fidget with, so I've decided Try it because I remembered I had some rocks from a beach that I went like 2 years ago, and I needed a great fidget toy so I looked into my rock and quartz pouch and I tested all the rocks, so now I have a favorite rock and a fidget toy I guess.

Greatest discovery ever