Ladies and gentlemen, I ask you: if you thought you could finish (or at least complete a large preponderance of) a dissertation early, and spend a solid month or two travelling and screwing around in Scotland before having to come back to the real world, wouldn't you do everything in your power to do so? So, my plan (which I'll admit has little or no chance of "surviving first contact with the enemy") is to do as much of my dissertation, or even several different proto-dissertations, as possible during the preceding months. So, I've come up with some potential topics.
In the unlikely event that none of those topics work out, here are some other topics I might try to pursue.
As those of you who don't know me may have gathered by now, I'm seldom accused of insufficient planning.