Not high tech..... but some of my mechanics put a couple of small cable or "zip" ties around the driveshaft on another co-workers truck. He only made it about a block before returning wide eyed fearing major repair. They make an awful racket when slapping the floorpan, but don't hurt a thing.
To this day, everyone in the shop and even my regular customers call him "Zippy"
To this day, everyone in the shop and even my regular customers call him "Zippy"