I wasn't just going to leave it at that...
Handwritten
"That's not your only gift," John admitted, pulling a smaller package out from behind him. "Look, I know this may seem kind of…unusual."
Sherlock took the package from him and tore at the wrapping. Inside was a leather journal. Opening it, he looked at the first page and saw, written carefully in John's painstaking script, was the title The Adventures of Sherlock Holmes.
Sherlock stiffened in surprise, and then started flipping through the pages. Page after page of John's handwritten notes and stories about all the things he and Sherlock had done together.
"…John, I…"
"It's not done," remarked John quietly.
"Handwritten?"
"No computer, remember?"
"Ah."
Prompt was from Sailasiri Culnamo, and it was: unusual