Here's a story to tell on myself, and maybe a lesson for you all. I scanned this note some time ago, and was surprised to find brown marks on the scan. Turns out I had been eating a chocolate ice cream treat, some of the chocolate had fallen on the floor, I picked it up so the dog wouldn't get it,
placed it on the computer table, and (apparently) placed the $5 on it. Most of it came off nicely with water. Hope you all get a laugh out of it.