The phrase "and whatsoever else" is correct and usable in written English.
It can be used to refer to additional items or matters that are not specifically mentioned but are implied to be included.
Example: "Please bring your notebook, pens, and whatsoever else you might need for the meeting."
Alternatives: "and anything else" or "and all other things".
Burton suggested many cures for melancholy - study and exercise, for example - but he returned again and again to the same prescription: "Let them use hunting, sports, plays, jests, merry company... a cup of good drink now and then, hear musick, and have such companions with whom they are especially delighted; merry tales or toys, drinking, singing, dancing, and whatsoever else may procure mirth".
And whatsoever ye do, do it heartily.
"Prawn trawlers on the west coast come up with prawns and nothing else whatsoever.
Efficiency is vaguely sought; the important thing is to insist that your method is best, despite the fact that you and everybody else know nothing whatsoever about how to set up a file.
"I have not seen any evidence whatsoever of an agreement between Mr. Zazi and anyone else, which is the essence of a conspiracy charge," Mr. Dowling said.
"The fundamental underpinnings are so shaky that I have no confidence whatsoever that any so-called relationship between the price of gold and anything else is a stable relationship," Mr. Kinniry said.
In the age of Facebook, Twitter, Instagram, Tumblr, YouTube, and whatever else people use for social media for instant streaming, isn't it interesting that no photos or videos whatsoever of the governor among the protesters has surfaced so far?
And who else but a small boy thinks putting a ball in a net is of any importance in the world whatsoever?
If such an account is allowed to be generalized to all of space and time, we get the strongest occasionalism, according to which there is no power of any sort except God's power, and God's power is incapable of being shared with anything else whatsoever.
Who else, and where else, needs this information?
