I thought about masks, but unsure as in my location and situation, not sure how practical thought would be (and since when I do go out it's to bars and then I don't wear a mask as I am too busy swilling liquor), the pocket square as mentioned was a non-starter, but maybe a handkerchief that I could keep inside my coat? I like the tie idea, but not enough material (even though the shirt-maker from Italian Job had a good look in my opinion). I suppose I could store it away in the even of the collar or cuffs starting to fray.