Clown Extermination Machine

You may not have known that the Nazis' need for world domination was matched only by their total intolerance for clowns of all kinds. It was with this hatred in mind that Nazi engineers set to their drafting tables to design the perfect means to rid the Fatherland of clowns once and for all.  What they came up with looks exactly like a machine gun; however, when it is fired, it produces in the place of bullets a thick black ink which the clowns overreact to, causing mass hilarity.  The project was scrapped due to counter-productivity.

The Flying Dutchman Experiments

The fuhrer's obsession with the work of Richard Wagner is common knowledge.  However, the fact that Hitler had only the most superficial possible understanding of Wagner's work is often omitted from historical record.  For instance, Hitler would generally sleep through productions of The Flying Dutchman and then regale his staff with incorrect recollections.  He thought it was about a Dutchman who could fly, and transferred that understanding to the theory that he would surely conquer the world if he could unlock the powers of these mystical Dutch.  Unfortunately for the Dutch, this consisted of a series of experiments in which Dutch were thrown from high places and expected to take flight.  To this day, the Dutch still haven't forgiven Hitler.

Fergie's Face

As a part of the Abominationschtiffelschtungenharfsen project, Hitler planned to create a monster to ramp up the psychological aspect of his blitz.  What his evil Nazi scientists constructed haunts the free world to this day.  Originally known as Der Scheisseaussehn, Fergie's face is one of the few tangible relics of Nazi experimentation gone awry.  The injections, they only make it worse.

Turning Kittens into Gold

As the war trudged on and the U.S. finally officially joined the Nazi enemies' list, Hitler began to look for new sources of revenue to fund his escapades in Russia.  A scouring of German streets for extra gold yielded very few treasures, but very many stray kittens.  Hitler, being a master of logic and a mean asshole, decided that the only reasonable course was to attempt to convert these kittens into gold.  The Nazis, of course, were never able to master the vagaries of dark alchemy to affect the transition, but the result was something Nazis value just as much as gold: dead kittens. 

Giant, Gay Penguins

Hitler's physical love of birds should be obvious to anyone with even a passing knowledge of the man.  Some people plainly love to sex up birds; Hitler was one of them.  It caused problems with his mistress, Eva Braun, but, when Hitler's prized sex-egret flew away, even she could not convince him to halt research on his newest companion:  the giant, gay penguin.  It's size allowed it to give to Hitler as well as it received, and the flightless nature of the penguin was perfect, as Hitler's fragile ego couldn't have withstood another migratory lover. 

The First Search Engine

Made from a converted fire engine, the first search engine was commissioned at the tail end of the war and designed by Dr. Werner Von Lycos to run on the tears of broken families.  It's "search bar" was a line of five gestapo and it only responded accurately to one query ("Can you find me some Jews?"), but it made history nonetheless.  It is regarded today as the most foul search engine ever invented, surpassing even HotBot in pure evil.