I've just finished my Jinx costume. (Well, "just" - January, really. Actually, that's a scary thought. I have no idea where the time has gone this year.)
At the offices we have a kitchen shopping list. It's a blank, black, non-descript clipboard, with the label "kitchen wants" on the front.
I may more may not have abused it daily with comics.
(Click for bigger version)
I may or may not have also snuck some notes into people's cars.