I was paid $8 for working at the local grocery store from 7:00am till 8:00pm on Saturdays, and an extra $2 if I worked Friday afternoon after school. And, it lasted all week, including gas for my car.
My first tent camper, a starcraft constellation 8, had the "heater" in the floor. A little radiator looking thing that put out a little warm air.
That failed on one trip. The fiberglass hard tops on the canvass bunk ends cracked in the single digit temps.
I used to use the J C Whitney auto parts catalog and they offered a record turntable for cars. It mounted on the transmission hump and was "shock" mounted. Never bought one, figured it would scratch up my albums. Pre-8 track days.