clues to the past

Ways I currently have of checking the details of things in my past, when my memory does not suffice:

The notes I've written down in my "daily notes" file, about the things I do each day.
The notes I've written down in various other more specific files, like computer notes, etc.
The DW posts and comments I've written.
The emails and texts I've sent and received.
The photos I've taken.
The receipts from shopping in person (these may be photos, scanned PDFs, or text emails).
The spreadsheet detailing where/when I've gone shopping and what I've purchased (includes online purchases) along with the total prices.
My checkbook registers, bank and credit card statements (for purchases/payments/etc).
The call history on my phones.
My browser history.
Things I've written on calendars.
The daily notes I write down as part of my work.

[ probably various other things too ]