I fought back against neighbors who blasted shitmusic from an outdoor stereo by using microwave oven parts in a homemade sheet-copper horn antenna to microwave and stop their stereo. I was in my last year of the coursework for my PhD in physics and math and used the university's expensive Mathematica software to optimize the dimensions of the horn antenna I designed.
This was more than the statute of limitations of whatever laws I broke ago but when people try to report such things to the police they sound delusional so I was safe.
I saw some MacGyver reruns my wife told me to watch and I would like to think MacGyver had a doctorate in the physics and/or engineering that made him able to invent his weapons.