Ghost!Castiel and Ghost!Dean meeting in a graveyard.
Castiel died a long time ago, over 100 years have past since he was laid to rest under the earth, while Dean is a new addition.
Under the pale moonlight, they dance together to ghostly music and Dean picks the flowers off his grave to give to Castiel.
Pocket angel/conscience Castiel makes all his own clothes. Gabriel buys him scraps and off-cuts of fabric at the local haberdashery. All the shop assistants know Gabriel by sight. They also know he bought a dolls house off ebay. Castiel lives in it and he has a…
Cas with like ten other fallen angels hanging out in the bunker, burning their lips on their tea every time they try to take a sip, gossiping in Enochian, and when Dean comes in with a fresh tray of snacks they all abruptly stop talking and look at him.
“What were you talking about?” Dean wouldn’t normally pry, but Cas is blushing and now he’s curious.
From a couch at the back of the room, one of the angels pipes up helpfully, “Not your butt!”