IT Policy led to pranks
Previous job in a large public sector org, the IT dept made a point of locking down 95% of all settings on standard PCs.
Of course, one of the locked settings was the volume control, and they had the volume turned way up. Suffice it to say, every day you could hear when people arrived at work, and their Win98 systems all went into a cacophony of Sci-Fi sound effects.
Most staff were wusses, and wouldn't complain to IT, but I did, and explained my role (partially IT) within the dept, and they relaxed my permissions, but whether by accident or on purpose, they also gave me admin pemissions to all the other department PCs.
The power I had. Mwahaha!!
(Not really.) If I blabbed about the power, someone in my department would have shopped me to IT, so instead I used the power to reduce the volumes, and claimed I had spent an afternoon 'dealing' with IT support to get 20-odd PCs sorted ("It's complicated stuff, ya know").
I ended up with a modicum of respect, and most IT issues got put past me first. IT support rarely got phoned thereafter. Everyone (including IT) was happy.