Take the day off, online

This Is Sand converts pixels into digital grains of colored sand, allowing you to build any number of sand castles right now, without straying from your desktop.

The site’s bare-bones layout may confuse you at first — the screen’s as lifeless as a gray day at the beach. But click your mouse and the sand begins to flow. (When you’re done, you can save your designs and submit them to the site’s gallery.) It’s as relaxing as it sounds, and more hypnotic than you’d imagine: a perfect way to while away the weeks before summer’s here and real sand castles beckon. (Just 21 weeks to go!)

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