It's the end...but the moment has been prepared for.
Clara was just reaching up to write another message asking for a way out when the door was jerked open. She leapt back in surprise.
'Do you like it? My granddaughter started this, way back. She got annoyed when I spent too long in my room and decided to leave me a message. Since then, it just kind of... grew.'
So this was the door to the Doctor's room. Clara found herself standing on tiptoes, trying to see around him. The room behind was surprisingly plain for someone who had spent so long here- an old straw mattress lay in the corner, with an old, Victorian-style armchair next to it. A book lay open on the table, no doubt written in some kind of intranslateable language. In fact, the only thing that looked even vaguely used was a chest standing in the corner. The lid was propped open and she could just glimpse the top of a stuffed owl.
'Shakespeare's best bed, that is. He left his wife the second-best one. She was quite happy, actually. That was the one they slept in, this was for guests. I hardly ever use it though, mostly I just doze in armchairs.' Somehow, the fact that the Doctor had been given Shakespeare's best bed didn't come as that much of a surprise.
'Anyway! What to do? Have you seen the Medusa Cascade yet? I went there when I was a boy, through the Master's textbook into it... Probably not a good idea, but it was funny at the time. Or we could go watch the coronation of Queen Masilla XXI of Terenon, I've heard the fireworks display was amazing. Or...'
He was already about halfway down the corridor, the door to his room swinging shut. Clara sighed and jogged to catch up with him. The TARDIS hummed gently as he flicked the lights.
Ready for the next adventure.
AN: Thanks so much to everyone who suggested anything, ever, for this story. I was going to write all the ideas people gave me, but... I'm really sorry if I didn't get around to yours. This story ended up being way more popular than I could have hoped for, and for a while I thought I was actually going to keep it going forever. But... Well, I guess assessment got in the way and even now that I have time to write I don't have the same inspiration. If anyone wants to take over the story, go ahead, or use the idea in your own story... Thanks so much to everyone who's bothered to read this far and for all the great reviews and follows!
And yes, in my mind, the Doctor leads Clara right into the room full of spare doors. He finally found it.