That reminds me (heh) of a bit from one of my favorite book-series, involving someone recovering from a kind of brain injury.
> “It’s been so long since I had to [use a holo-map], it didn’t even occur to me. It’s like an eidetic chip you can hold in your hand. It even remembers things you never knew before. Wonderful!” He unfastened his jacket, and pulled a second device from an inner pocket, a perfectly ordinary, though obviously best-quality, business audionote filer. “She gave me this, too. It cross-references everything automatically by key word. Crude, but perfectly adequate for ordinary use. It’s nearly a prosthetic memory, Miles.”
> The man hadn’t had to even think about taking notes for the past thirty-five years, after all. What was he going to discover next, fire? Writing? Agriculture? “All you have to remember is where you put it down.”
> “I’m thinking of chaining it to my belt. Or possibly around my neck.”
-- Memory (1996) by Lois McMaster Bujold
That last "audionote filer" is looking increasingly practical in real-life, cross-referencing and all.