Do or die

I've recently seen a couple of instances where people have confused the simple word "do" for something fancier: "without further adieu" and the related "much adieu about nothing". The confusion is somewhat understandable with "ado", as this word no longer has an independent life in English outside the phrases "without further ado" and "much ado about nothing". In Old Norse, the languages which the Vikings living in the North of England spoke, the preposition marking the infinitive form of the verb was "at" rather than "to" (as it was in Anglo-Saxon and is in Modern English). In northern dialect, "at do" got somewhat squished into "ado", and this has survived only in the phrases mentioned above (and would probably not still survive in "much ado" were it not for Shakespeare's play).
Another surprising confusion is "make due" instead of "make do". "Make do" is admittedly a rather odd construction, since "make" is more likely to be followed directly by an adjective like "due" than by another verb. It is also, surprisingly, fairly recent, the OED's first quotation being from 1927. But by the forties it was part of the famous "Make do and Mend" of the British war effort on the home front. This "Reduce, Re-use, recycle" slogan before its time was first publicized in a pamphlet produced by the Ministry of Information in 1943.