I call it "treasure hunts". I have them often. There seems to be an evil genie that lives here in the attic, or somewhere, that moves my stuff around and hides things. I won't let him get away with it though, I search and search until I find it, most of the time. On rare occasions, he has done so well that it never shows up again. Don't let this stop you, though, you keep on looking and most likely, you will find it in a most unusual place. Then you will say to self, "Self, what was I thinking"? See, we always blame ourselves and it isn't our fault.