Remember the Days of Drive-In Movies? Guess What These Were Used For!

Remember the Days of Drive-In Movies? Guess What These Were Used For!
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With the advent of digital technology, many familiar objects have now become outdated, a thing of the past. These include many that were seen as state of the art or even futuristic in their own time. However, some of these great inventions are now mostly keepsakes that only old-timers or aficionados would have any clue what they were.

Here’s our challenge for today. Can you figure out what these strange contraptions are?