What you need: ZionEyez, $150 

Risk level: Low

We’ve went over a few ways for you to hip your friends to what they’re going to encounter on a test, but this may be the easiest one yet. ZionEyez glasses feature a built in video recorder so you can wirelessly capture everything on the exam without anyone being the wiser. And unlike a lot of other “spy glasses”, ZionEyez allow you to switch out the sun glasses lenses for less conspicuous clear ones.