Rather than keep multiple files, to-do lists, and longer notes on something coming up, consider using a Word file in the "Outline View" to create a nested, expandable personal wiki-style organiser. It's how one Lifehacker reader rolls.
q335r49 wrote in with his personal preference of using Word's Outline View to contain his to-do list, little personal essays, a shopping list, and whatever more he needs. Using the Outline, the individual items are collapsible, and using an ever-present backup system like, say, Dropbox, it's always available for a read. Neat idea, and a great tip.