I am always putting important things in 'special places' so they won't get lost.
But it doesn't work when I forget where the special place is.
I'd had enough of it, so when I was tidying my mess of a room yesterday, if I found something that had been 'missing', or something that needed a special place to go, I put it there, and then wrote myself a note. On the back of an old business card. And stuck it on my wall.
One day they will come very much in handy to me :)