There is funny chrome plugin available where you can goof up your co-workers chrome browser by installing the plugin, and whenever they visit any website their browser window will change based on the setting you made like rotate all the images on the webpage, flip the website, change the colors etc.,
aprilFools Chrome Plugin
Visit this Chrome Plugin called aprilFools
Choose an effect to apply to every website they visit
aprilFools Plugin has 17 effects like upside down, blur, html pride, 90’s, spin, fade out, slowly grow text and many more …
This will also be a perfect prank for April Fools day!