This is fun. I don't need no stinking Yahoo! account to create ID passes and trading cards. My granddaughters will love having trading cards made with their picture on it.
But back to school stuff. I can see making faculty trading cards or magazine covers in much the same way I had a reading promotion using the ALA READ format. I can create book review cards. We could create book review cards district-wide, post them on Flickr, print them up from Flickr, and post them around the library.