[SketchySeaBeast]

Now we need a palindromic equivalent to "correct horse battery staple".

[layer8]

It already has four Rs, four Es, four Ts, and two As and Os. I think it’s fine.

[rexreed]

Well if you mean Anagram, here's one that works: "CYBERATHLETES REPORT ACTORS"

[SketchySeaBeast]

No, I meant palindrome, so that you end up repeating the same letters with little increase in memorization complexity, but that works too - throw together a few anagrams and you're golden.

[rexreed]

My favorite palindrome is "A man, a plan, a canal, Panama". Supposedly a reference to former US president Theodore Roosevelt and his quest for the Panama canal.

[lowercased]

"Put Eliot's toilet up" has stuck with me for years. As has 'I know a fat man called Ella C Namtafawonki'.