This fun commercial for Dutch parcel company PostNL took advantage of 3D printing to deliver a trumpet that did not exist until after the box that it came in was shipped.
With the help of 3D printing expert Joris van Tubergen, PostNL supposedly sent an Ultimaker 2 3D printer (and presumably a power source) through the usual stages of delivery while the machine printed the trumpet. It’s surprising that the print came out as well as it did given how finicky 3D printer calibration can be. Of course, we wouldn’t have the ad if the stunt didn’t turn out well.
The only problem here is that you’re going to be billed extra for a 3D printer that you didn’t order.