An inspired eight-year-old wrote Delta Airlines a letter with a suggestion on how to locate missing planes. He was watching a show about the missing Malaysia Airlines plane when the idea came to him. It's easy to laugh it off as cute and naive, but after going over it a few times, it actually kind of makes sense.
He also supplied a supplementary blueprint to demonstrate how one would execute his concept:
Delta sent him a nice thank you, along with some free Delta swag:
It's a pretty solid theory, if you believe that the Malaysia Airplane still exists in this dimension.