Well, as you know angelus2hot opened to put all those lost prompts we have in neat and inspiring categories.
So among other things I posted this prompt:
Characters: John with Sam and Dean (younger than ten) OR John with young Adam (if you prefer).
Prompt:John reads children stories to his kids, stuff like Where the Wild Things Are, the Grimm brother fairytales, etc and we see how his children and himself react to what they are afraid of, believe in, and suspect...
And the wonderful vexed_wench answered with this little gem (John reads to young Adam) called My Boy
It's really sweet and cute and a bit sad too.