Here'a another awesome post that works better during the year end. Throughout the year, we create so much blog content and unfortunately, some of them get overlooked or buried but they are pretty timeless or something you think would benefit your readers to have a second look. This also gives you a chance to introduce content to your newer readers who may not have seen it before.
Dig them up. Do a year end review of your most important, most popular, most commented, more tweeted, most controversial etc posts of the year.