Had a building buddy long ago who liked to drive a nail into a crack in his basement floor, tie a bunch of rubber bands together end to end, wrap the middle of the chain of rubber bands around that nail. Then we'd both take a car and secure either end of the rubber band chain to the front bumper of the model, stretch them apart as far as we could, and on the count of three let go!
We then would reassemble the pieces and do it again a couple days later after the glue dried. Used his models, his idea, I just aided in the destruction. He gravitated towards factory stock, quick builds OTB, wheels had to roll, whereas I was into drag cars, rods and customs, and paint detailed mine.
Now that I think back, many a currently hard to find Johan kit met it's demise then.
Me? I'd use firecrackers or a BB gun.