2 Timothy 4:13, the purported instructions of "Paul" to Timothy, "When you come, bring the cloak that I left with Carpus at Troas, also the books and especially the parchments" even if not Pauline, presents evidence of parchments (Greek: membranai from the Latin membranae) as documents i.e. note books in the second century. The note books could have been anthologies such as writings of pagan authors or authors in the Hebrew Bible. They are for personal use. Could these be "Paul's" personal copies of his own letters as argued by Harry Gamble in 1986?
T.C.Skeat in 1979 argued for a reading of 2 Timothy 4:13 in which the membranae are the books.
Even if this indicates the creation, maintenance and use of note-books in a description of "Paul", they are not carried everywhere.