I LOVE this calendar by Bath-based design consultancy Mytton Williams.
"Consisting of 12 colour-coded pencils to indicate the seasonal temperature and the days of the year printed along the whole length of the pencil, allowing each day to be sharpened off."
There are some behind-the-scenes photos of the project on their blog. The calendar is available to buy from their website for £12.00.
Seen over on FormFiftyFive.