Technique 1: The Randomly Placed Stapler
Place a stapler on their desk with an ungodly amount of staples facing the wrong direction.
Watch as they try to figure out what it is.
Learn more about this techniqueTechnique 2: The Fake Meeting Invitation
Send them an email inviting them to a meeting that never existed.
They will be confused, but mostly just annoyed.
Learn more about this technique