And what was she, the fairy Melusine?

Give me a prompt for writing. Something you think would be cool. Can be anything (I will have a go at writing fandom stuff if it seems possible, I don't generally write non classical slash, but will even try to make that work- it will be angsty, and it will not be The Doctor/Rose). Really though, I'd like something vaguely literary- either new or related to some of the fiction up here. But really, anything. 

(Need to rewatch some more Doctor Who before writing Madeline's idea, which is the Doctor and Greek myths.)