: With a few friends I am currently writing a story about Barliman Butterbur.

: I want to write a sequel to Farmer Giles of Ham, but I wouldn't know where to start.

I have never set pen to paper, as it were, but if I did I would choose to write about the Kin-strife. There is enough background material to provide a setting, but the actual events which took place are so minimally documented that a writer could have a field day filling in the details.