Cheat sheets have an extra bonus, they are a great way to trick students into studying without realizing it is studying. By giving them a limited size, the student has to consider all of what they know and decide which areas they are the weakest on that need to be included, which they then have to organize into a compact and quick to reference chart. It doesn't replace the more boring phases of studying, but it does create a one off that gets better engagement and is more personalized than a fillable study guide or example test.