Kids will love opening their lunches to find a secret message not in their lunch, but on their lunch. You just take a toothpick, scratch your message out on a banana peel (without puncturing it all the way through to the fruit) and wait for your message to appear. Pretty cool. I might even try this one out on my husband ("Use the force, Luke" and "My precioussssss" seem like good options).

Via Come Together Kids