Subject: I think classically...
Posted on: 2021-04-25 08:06:24 UTC
... they've been things that /shouldn't / happen, but showed up in adaptations anyway. "Thranduil on a moose!", "Radagast on a bunny sled!", and of course "Jadis in a block of ice!" all fit this (as does the rather less-unwieldy "Flaming Denethor!").
I'm not sure this is even /possible/ for a TV-based canon - it's /all/ adaptations.