I am currently at a conference specific to users of the Discovery Education website and I have been going to a number of classes. In yesterday's class, how to use green screen with DE resources, the instructor Dave. T. showed us this fun chrome extension. The extension basically lets you display text (in this case his website address) in a huge banner like format across your screen (see last picture). This is a great tool for directing students to websites that they normally couldn't see on your screen (in the past I just copied and pasted web addresses to a Word document and blew it up - this is much better!).
Below are screen shots on how to get the extension and how to use it.