I am a historian in my house, and the job is quite simple yet require a lot of time commitment. The biggest responsibility is to document everything, that means to take pictures of events, to make scrapbooks, to arrange/rearrange documentations (previous years) and books in the house library.
Our house was founded in 1919 (Iowa State), and I learn a lot of histories of my own house by doing this. It is fun, I like it!
The bad things are that I am required to be around all the time and to be able to document everything. I am not an expert in taking pictures, and sometimes I have problems with this. Oh, well.