I've tweaked this idea I saw on Twitter (or Pinterest?) a few years ago to fit my needs. I use one sheet of magnet paper, cut in in four long strips, then each strip is cut in 1/2 inch widths. Here is how it looks:
(Please excuse the quality of this video - Turns out TubeChop videos don't show up on iPads...)
Our question bank is on this document. Students will be in charge of writing the questions and posting them this next school year.
What questions would you ask? Please leave your questions in the comments below.