It’s ok to feel uncertain about this geocache. You've come to the right place!
Extreme stealth required for this high visibility spot. ToTT may be needed to retrieve the log. Bring your own pen/pencil.
According to Wikipedia, this fun child (and office) toy was invented in 1946 by Albert C. Carter and Abe Bookman. It had variations for a few years, but in 1950 the product was revamped into the now-traditional black-and-white 8 ball, which is still produced today.
Please stay clear of muggles, replace everything as you found it, and enjoy!