My current and favorite fandom is Sherlock.
And here's the thing about that:
Things Sherlockians ship without a second thought:
*Two best friends that are repeatedly stated to be platonic by the writers, actors, and characters
*Two mortal enemies who want nothing but the utter ruin and destruction of the other
*The Ice Man and the Inspector who have never been on screen together
*That same Inspector and the girl who is infatuated with Sherlock, because of one dropped jaw and one conversation
*The psychopath about whose personal life we know nothing and the minor canon character that literally does not exist in this universe
*Two random adorable extras that appeared in separate episodes in entirely unrelated fashions
*Dinosaurs and the morons who love them
*Jars of jam and the army doctors who love them
*Animal versions of the two main actors
*Articles of clothing
*Mugs
...
To be continued...