"Divers and Sundry". No, I'm not a deep-sea diving enthusiast, nor do I own a sundries store.
"Divers": many and various kinds, several, different, assorted. The word is considered somewhat archaic or quaint in some circles but is still in use.
"Sundry": various kinds, miscellaneous.
It makes me think of "a little bit of this, a little bit of that" from Anatevka, a song from Fiddler on the Roof. My mind forms odd connections.
So the blog title "Divers and Sundry" with the description "various and assorted miscellany" is doubly redundant.
The expression "divers and sundry" used to be a not infrequent expression, but apparently it's fallen so out of use that even intelligent people don't get it. Ah, well, it still suits me: somewhat archaic and redundant but still in use.