I got a message from my sister this morning with pictures from this site.
She doesn’t know where they come from, but a few minutes search uncovered this:
Another thing that popped up was this Japanese site with pencils carved, just in the wood, leaving the lead inside untouched.
I’m blown away by this work, but I don’t think it’s a useful skill.
It is, however, ART.
-- No trees were damaged in posting this message, but thousands of electrons were seriously inconvenienced.