Spanish designer Oscar Diaz has designed a calendar that uses the capillary action of ink spreading across paper to display the date. Each month, a bottle of coloured ink spreads across a sheet of paper embossed with numbers, colouring them in as it goes. Ink Calendar will be exhibited at an exhibition called Sueños de un Grifo - Diseño con Alma de Agua that opens at the Círculo de Bellas Artes in
![Ink Calendar by Oscar Diaz](https://cdn-ak-scissors.b.st-hatena.com/image/square/78afbbf888dc7e70fddffbbb37b9556f1f948138/height=288;version=1;width=512/https%3A%2F%2Fstatic.dezeen.com%2Fuploads%2F2009%2F07%2Fink_calendar_oscar_diaz03_s.jpg)