I think I must have been suffering from a lack of Calibre projects (Ha!
) as I have added a custom column for putting the letter grade (this is in addition to the normal/star rating). I made the column text with a fixed set of permitted values. I figure since I am now keeping closer track of this stuff due to our weekly reports I should have it with the book.
So now I have Date Read and Read (Yes/No) as well as Grade custom columns.
I know some people track the price paid, number of pages, and number of words. Since I am always curious for new ideas about managing our libraries what other custom columns are y'all using?