When Jon Pertwee reincarnated into Tom Baker in 1974, the Fourth Doctor of the popular sci-fi show Doctor Who ditched the foppish look of velvet jackets and frilly shirts, and went for the “Romantic adventurer” style, with floppy felt hat, long overcoats and, most iconically, his multicolored scarf.
I made one myself some time ago (twenty years?) but had no pattern so I just picked colors I liked and then kept knitting until I felt it was long enough to call a doctor who scarf.