Kek-W is a UK-based writer of comic-books, graphic novels, prose fiction, film and TV. Warren Ellis, another UK-based writer, noted the following on Kek-W’s newsletter about another UK-based writer:

Grant Morrison famously had a series of black notepads with ideas / pitches for virtually every major character IP from Sherlock Holmes onwards, just in case someone, you know, asked. It’s a good habit / exercise / praxis to get into as a writer: well, what would you do if you got to write, for example, a Tarzan story? And even if you never get to play with that character / universe, it can spark ideas for yr own original creations. But in the unlikely situation that someone from DC is reading this: Well, hello, there!

What an interesting idea.