I use Google Drive all the time in my classes.  It is super easy to take a photo from my phone, send it to my drive, and then open the photo onto my smartboard.  The whole process takes seconds.  People rave about Apple products, but a phone or tablet running Android as just as many great features.  
For example, if I want to use a section of a student's writing as an example, snap a shot and throw it onto the board.  If we take notes on the whiteboard that I want to reference the next day, a simple picture and to the Drive it goes.