I have a title "Every Possession, A Duty" which fits so well with what I want to write that it's scary. It's from a longer quote that I found when "googling" some words inspired by the prompt I had been most drawn too. The perfectness of the quote sealed the deal, even though the other two prompts were really interesting too.
I even have the beginnings of the story forming. I know roughly when it will be set and what I would like to happen. Just hope Sam and Dean and the other characters co-operate. But I know they won't. They will do what they want, I'll just be the observer and note-taker. But there will be visions and demons invading Sam's dreams and non-con and chains and collars and whips and boys crying and surrender and submission and sacrifice.
Now I just have to find the time to write it while I'm still working on getting my Big Bang done!!!