Throughout his directorial career, Stanley Kubrick maintained a list of meritorious movie titles that deserved to have entire films built around them.
Kubrick cataloged these "titles in search of a script" with his personal assistant Tony Frewin, who would explain the backstory years later in the The Stanley Kubrick Archives retrospective. The best of these orphan titles was Twig The Enhancer, Kubrick's unrealized fantasy project:
Heroic quest and Tolkien-type fantasy. Stanley's house was in a sink as regards mobile phone reception, so, the company put in an enhancer to boost reception and transmission. After a few weeks it went down. An engineer turned up and fixed it. We asked him what he had done. He replied, "I had to twig the enhancer.
And here's a list of some other never-to-be follow-ups to 2001: A Space Odyssey and The Shining, with commentary from Frewin:
(Stanley's title misunderstood by a switchboard operator at Shepperton Studios while he was making the film.)
THE TWO WALLYS
(From Wally Veevers and Wally Gentleman, two of the SFX supervisors on 2001: A Space Odyssey.)
SIGHT GAGS FOR PERVERTS
(How Dr. Strangelove was described on its release in a review in the Bulletin of the American Film Institute! Stanley cherished this.)
SOME LIKE IT COLD
JACK THE SNIFFER
(An intriguing double-bill for forensic science buffs.)
Via Lists of Notes. Photograph: Cinetext Bildarchiv/CINETEXT.