Well, one cool thing about posting is that, after you do, there are "similar threads" listed at the bottom of the page. I asked about this not long ago here: https://www.penturners.org/threads/bic-sticks.166772/
The pic I posted is not my work, but just an example I found a picture of. There's some good info in the replies.
I got the "starter set" and have turned all 5. Pretty easy IMHO. HOWEVER, they'll be a bit difficult if you're used to turning oversize pen bodies. In order to keep the look more or less "true" to the Bic concept, they need to be on the slender side. That said, they're pretty inexpensive and can be used as giveaways or extras.
Also - they're an interesting way to use up blanks that are taking up space that you haven't been able to match up elsewhere.