In my parents' home the mail piles have a tendency to get unruly. I once spent a couple of weeks on a project to scan and recycle old bills and statements. I saw the below notebook, a bills calendar, on Etsy and thought that it would be a great DIY gift for my parents for Christmas. They'd laugh at my ever-present impulse to impose better organization on their lives but ultimately appreciate the help getting their bills in order because, as is likely the case with many people of their generation, they haven't migrated to online bill-pay for many of their monthly obligations.
Find the real thing available for purchase here.