I have an office amid a bunch of leftists in a leftist city. I set up a router that was locked down tight and wasn’t attached to any devices (in case anyone was able to crack it), and then named it a very graphic sex act involving Øbongo.
Then I locked it in a cabinet and allowed to to broadcast for a few weeks. It drove the IT guys crazy! They could “see” it but couldn’t figure out where it was broadcasting from. I finally got bored with it and hit the reset button.