I Spy a QR Code is a blog post that includes a Prezi by Nina Nichols Peery.  I promise that I’m not just recommending this because it includes a link to this blog!  The Prezi includes some interesting videos and some unique QR code activities that I think you will like.  Be sure to click on this link for downloads for the accompanying worksheets.  I think you will enjoy seeing new ideas for using QR codes in your classroom to engage the minds of your students!