WOW, you guys are old but still have your memory.....still a few left to answer.....

Bob is correct on the door latch plate....opened beer and pop bottles.

Don is correct on Pledge

Tech is correct about cutting the seat to make room for the shifter handle

HotRodPaint is correct on neckers knob.

The vibrator was in a tube radio. It was a bimetallic contact that "chopped" the DC current and (just like thru the ignition coil) made the field rise and fall in the transformer.....making a simulated AC out of DC. When the vibrator started to go bad, it put a real buzz on the radio....sometimes it only buzzed when the thing was warming up.

Any other guesses?