The conversation with M, age 10, went a little like this:
M (holding up notebook): Guess what this is.
Amy: Your journal?
M: Not just any journal. It's a journal about stuff I get in my eyes.
Amy (realizing this kid has hit on a gold mine of awesome): What did you get in your eyes today?
M: Nothing today. But yesterday, it was toothpaste.
Later on ... M is scribbling in her journal.
Amy: Did you get something in your eyes?!
M: No. This is a different journal.