A large pop bottle, with the top cut off, upside-down on a service mast was pretty good.
My favorites were on TV shows from the 70's or early 80's. "Any Woman Can" and "You Can Do It" were both awesome.
One of them built a desk with two receptacles and showed how to make an extension cord with two male ends to energize them. They even warned that you need to be careful which end you unplug first.
Another good episode showed how to install a dishwasher and drill a hole in the counter-top to run the cord up to the counter plug.
It isn't just that the actors didn't know what they were doing. There had to be other people in the studio with them.
Off topic on electrical, but still with the TV shows, you must be careful when you cut a peep-hole in a door that the bar in the middle of the screen door does not cover the hole. Oh well, as she said "Anyone bad would open the screen door and you would be see them".
