Notebook

The First Doctor owned a notebook which, according to Susan, he never went anywhere without. (TV: An Unearthly Child)

Earth-33⅓
In Earth-33⅓, an autograph-hunting fan owned a square autograph notebook emblazoned with the letter A on the cover, which he once held out to Peter Davison while asking him for Tom Baker's autograph (much to Davison's confusion). (COMIC: Introduction)