Oscar Diaz has created quite an intriguing masterpiece with this ink bleed calendar. You start off the month with a full ink well, and when you dip the special paper inside, its carefully timed capillary action reveals each date as time passes. Plus, each month uses a different color of ink to blend with the season. Dvice also tells us the calendar’s currently a part of an art exhibition at the Círculo de Bellas Artes in Madrid, but hopefully this will one day end up in our homes.