Such a cool idea! Stick Pick is an iPhone/iPod touch application that allows you to randomly (or intentionally) draw a student's name from an on-screen can of popsicle sticks -- but that's just the beginning.
You determine the mode and level of difficulty for each learner, and then, every time that student's stick is drawn, you'll be shown over a dozen Bloom's-style question stems -- uniquely tied to your learner's individual ability level!