"You sound like you know a few things."
Thanks. I do know a few things, but I'm not an expert in this area.

"Just tell us what you think causes the behavior of the jacket corner and the dogtags."
I didn't see the dog tags. I watched the jacket corner over and over and over and I think it's largely caused largely by the motion of its wearer, but also affected by some kind of acceleration - possibly, but not necessarily, Earth's gravity.

I'm not sure what kind of behavior to experience in space. Orbiting stations are in free fall (orbiting is falling). So you can get zero-g effects just because you're not in space. Still, it's not my area. I appreciate the fact that you did an personal experiment. Would prefer to see an actual analysis.