Falling stars?

Earlier this week I noticed there is a little gold sticker star on the floor of the BDO. I've no idea where it came from or how it got here. To the best of my knowledge, I don't own such stickers and don't think I have anything in my office from which it could have become un-affixed. I'm not much of a housekeeper to begin with, but I have no intention of removing it. The universe has given me a gold star for something and I'll take it.