How about just simply use motion activated lights, but with a short turn off delay. This way it constantly turns off while you are in there. Better yet it catches you when you enter the room, but then doesn't see the entire room space so you have to actively move to a part of the room to reactivate it constantly.
I saw this movie once, where this bus had to SPEED around town, and keep it's SPEED above 50, and if its SPEED dropped, the bus would blow up. I think the name of the movie was, "The Bus That Couldn't Slow Down."
During a triple digit summer day, turn the heat to its highest setting after everyone has left the house for the day. Same for the winter, crank the A/C to its lowest setting.
Receive a notification there's a water leak multiple sensors have detected while you're out of the country. Right when you've finished taking action to have it looked at, Pushover sends a notification of "Relax, I was just kidding...hehe"
I created it years ago and eliminated it because it annoyed me so much.
My wife usually forgets whatever she microwaves, so I created an automation that would say "The microwave has finished" after it ran, repeating every minute until the door was opened. She just ignored it the same way she ignores timers, but I heard it every single time. I later limited it to just two reminders per run, but because since she always ignored the reminders and I heard them, I decided that automation should be permanently retired.
Ah, yes - my parting gift when I left my job developing automated test equipment for a certain electronics company. A specific type of failure would compare random numbers to determine whether or not to display an embarrassing picture of my boss for a couple seconds. It was perhaps a 5% to 10% chance. Someone would alert the test team, but then be unable to duplicate the issue.
Years later, I learned that they used that computer to re-image machines in other factories. He was getting calls from around the globe asking why he was on their computer. A gift that kept on giving.
Back in another millennium I was on the creative staff of an online environment "game". I set up an unlabelled button in one room ("SoAndSo has pressed the button.") that randomly changed the color of the lights on the fountain in the next room ("The fountain lights are now chartreuse.").
Not sure if anyone ever actually figured it out...
I still have that fun delay with my Sengled bulbs. I can press the button and literally be in bed before the lamp goes off. Having that delay is not a bad "feature" until the cat is making hurling noises and I have to wait for the lamp to go on.
Get woken up in the morning to a Pushover message that one of my hubs wants an update. Every 15 seconds I got 3 of them. Finally guessed what was causing them (I think) and got it turned off. I'm looking at you, Hub Monitor.