JVC Victor has made some new earbuds that are encased in real birch wood, which likely adds nothing at all to the aural quality, but does trigger my contractually obligated need to fawn over them. They'll be $130ish when they're released in Japan in February.
Note I did not put these in the "Green" category. If they'd been wrapped in needless bamboo I might have been able to sort of sneak them in, but nope.
JVC to launch wooden ear buds [SlipperyBrick.com]