If you follow me on Twitter, you know about this very clever clock that marks out time in knit stitches, making a 2m scarf in a year. I love it so much, I seriously began to think about how to make one. I think I'd basically need one of those crank knitting looms, but the good, reliable, metal ones are pretty pricey.
Then I came across this unraveling calendar, which is kind of the opposite idea. What a clever way to mark time!
And yes, I've already made an inquiry about the English version of this calendar. I'm waiting to hear back and hope it's affordable enough to be able to get one.