I found a little white button in the front pocket of my backpack. I must have stuck it in there when it fell off of whatever it fell off of. What that might be, I have no idea. So what do you do when you find an unknown button? Do you throw it out? Or do you worry that you might put on a shirt one day, notice a button is missing, realize it was the unknown button, and then curse your short-sightedness at having thrown away an article that you clearly needed for something?
As for me, I stuck it back in my backpack. It wasn’t hurting anyone.