Peter heard a flapping sound. He found a small slip of white paper had been wedged into the car door and he removed it. The paper said:
On September 15, 2010, soandso and whatshisname went to the zoo and saw a giraffe.
(This is not actually my speech, and this isn't an actual scene from my story, but you get the idea.)
It's worked so far. I'll take it out when (if) I finish the story and go back to edit, loooong after NaNoWriMo is over I expect.
To quote Abby...