The crook-lock device that locked the clutch or brake pedal to the steering wheel. There was a similar thing for column shift cars which was a GMH accessory part. Also the swamp cooler air conditioning which hung in the airstream out side the car. The round accessory heaters with built in fans and doors to direct the air fall into the same novelty category. Remember when the manufacturer's tool kit came with a grease gun and maybe some feeler gauges?