Ball generator breaks physics
Take the ball generator to the bridge and set it off, if you're lucky the balls will get caught on an NPC and they'll float off on the ball still sat down, if you're very lucky they'll fly off spinning round while still sat on top of the ball. This works with any NPC and you can push them around with the spawning balls, or even push the rag dolls around just by carrying the generator in hand and using it to push them.