If you have a noisy neighbor you can build a EMP blaster from an used cooking microwave and fry that motherfucker's phone, computer, TV and speakers (all in one) with a single blast through the walls.

cons: high voltages can kill you, need to put tinfoil around everything and the magnetron has toxic materials when handling. Maybe illegal (who tf cares, fuck the pigs tho)

pros: this new business will get you more $$$ than any drug dealer