I like to send little notes in my kid’s lunches, but “I love you, have a good day” gets old after a while. For my youngest, I send corny jokes instead. But I found the perfect thing for my 11-year-old: a pencil-and-paper game of Battleship.
Source: LifeHacker – Send a Pencil-and-Paper Battleship Game in Your Kid’s Lunchbox