Less littering than a note, and more attached to, say... a building or a vehicle, rather like the 'sub-naming' thing?
They (or rather the writing) could decay... like candles, for instance, and they could be used for the likes of... 'Now Selling... Now Hiring... Wanted: Dead or Alive... etc.
They could be role-played easier than notes, as they would have indicative elements inherent (perhaps in the text written on them)... like often used... crumbling, and so on. They could maybe take a tick to write out... or something.
Just a thought
![Mr. Green :mrgreen:](./images/smilies/icon_mrgreen.gif)