Hidden Agenda Mini Planner
You could say that this cloth-bound mini daily planner by Brass Monkey is undated...but you'd really be selling it short. It's more like..."un-yeared." See, we did all of the hard work for you.
We've already put in all of the dates, the fixed holidays, and tons of extra stuff like daily random holidays (it was Work Like A Dog Day when we wrote this, ironically), celebrity birthdays, and other bits of trivia.
With knowledge like this, you'll be the life of the party that you probably didn't want to go to in the first place. All you have to do is fill in the year, and what day of the week each day is on. Simple. So if you want, you can buy this planner today and still procrastinate actually using it until 2054...live your life.