Bookmarklet: Make any site sing With Carol of the bells.

In an effort to warm the cockles of your hearts with surprise and delight, EVB has created a holiday bookmarklet aptly named: Holify It! Inspired by the music synchronized house lighting videos that show up on YouTube each holiday season, the tool allows you to turn the website of your choice into a brilliant lighting display to celebrate the holidays. Try it out on NY Times, gmail calendar, YouTube, or your Twitter feed and feast your eyes upon the unique visualization on each webpage.

Known sites that don't work: Facebook.com (manifest.json) Chrome's extensions page (not sure why!)