Ruben van der Vleuten, as most of us, wondered what happens exactly when you send something by mail. What happens in between you sending it and someone else receiving it.
The idea of mailing himself was already taken, and he was searching for something less nineteenth-century. So... it occurred to him that he might put a small camera in a box, built a timer circuit and shipped it. And it worked! Please, watch the video... It's just amazing!