Jim Strickland showed me something startling when I was up in Denver this past Monday: A cylindrical neodymium magnet slowly tumbling as it drifts down a 2' length of copper pipe. Drop it at the top, and then watch it (against a reasonably bright floor) as it goes. Videos are on YouTube. No mystery; just physics, courtesy Lenz's Law.
Here are some peculiar ways to deliver toothpaste, including Crest-flavored pudding and pie filling. No, I don't understand that one either, unless it falls under the category of "business development."