Sometimes, you need to publish a webpage fast without going through a web host, ftp, and publishing. The solution? Pen.io http://pen.io/ After specifying the name of your page and a password (used for later editing your page), you are taken to a security screen to make sure you are not a robot. Then, you are taking to a beautifully simple page that allows you to create a webpage.
I like to do a scavenger-type hunt using QR codes. Pen.io makes this a very easy task. I create my pages that have clues on them on Pen.io, generate QR codes for them, then use tupperware-like containers to hide the QR codes in around the school, or even outside! The best part is when students create the QR code hunt on their own.