Mark Rober and his team worked with an ex-scammer and got him hired by a call center in India so he could plant prank devices in their offices. It took 18 months to plan and went very well. They planted a water bottle filled with military-grade fart spray in the office... left special soap in the bathroom to dye people's hands blue... and left a box of Viagra in there as well, with the boss's name printed on it. They also smuggled a "micro-fogger" into the office to fill it with smoke... and a lunch box full of roaches rigged so they'd run out and scatter all at once.
All of the pranks happened back-to-back on the same day. And Mark's team hacked into the company's security cameras, so they could get it all on video.