I used these Cheetah Magnetic Information Cards for Meet The Teacher! All you need to do is edit the PowerPoint file with your information, CREATE your own QR code (http://www.qrstuff.com/ then go to "email address"), print, and cut! The parents in my classroom LOVED them!
I purchased these printable magnetic sheets from Hobby Lobby: http://shop.hobbylobby.com/products/8-1/2-x-11-inkjet-flexible-magnetic-sheets-388298/
Please let me know if you have any questions.