Had a teacher one time draw a grid on her whiteboard with a space for each student, and she asked us to place our disks with our projects on the board with a magnet (so we wouldn’t lose them). The school had recently gotten rid of the old dusty chalkboard, and was really enamored with her new whiteboard and showing off her fridge magnet collection.

Luckily, someone pointed out why that was a bad idea before anyone did it, and she quickly changed her mind.