Work enforced a screensaver policy - a corporate screensaver that even us local admin devs can't change.
I swiftly made a .reg script and distributed it.
We all laugh whenever someone's "Ribbons" screensaver starts up.
I love using my powers for evil.

Circumventing Windows domain policies are so ridiculously easy.

Whenever someone complained about the policies management had me enforce, I saw it as them failing a test. If someone got around them, I'd just smile and say "hey, nice job 😊" and take my time in fixing it if management ever noticed and complained.