Here are some examples of "Ни" + preposition + "что".
Ни за что на свете
Not for anything in the world.
К чему всё это?
What is all this for?
Это ни к чему.
This is for nothing.
О чём вы говорите?
What are you talking about?
Я ни о чём не говорю.
I am not talking about anything.
"без ничего" (without anything) is a set expression.
You cannot say "без чего" and thus you cannot say "ни без чего".
Quote:
Originally Posted by Indra
(I'd say, человек без пирогов не человек)
A man without pies is not a man. :D
I think that is cute.