It was almost Christmas so you brought out the decorations for the bunker. Sam and Dean didn’t normally celebrate but they appreciated when you did. Especially when cookies were involved. You bring in a tree with Castiel and Dean’s help. Jack sees you stringing lights around the bunker

“What are you doing?” He asks examining the lights and sparkly decorations with curiosity and wonder. It was absolutely adorable when he tilted his head and squinted like that. Trying to figure out what was going on.