Winky Dink is one of my favorite silly early TV concepts, a kind of interactive programming that required you to buy something in order to participate.
My parents bought me a Winky Dink kit like these kids are using. You got a clear plastic sheet that covered the TV screen, along with some special crayons that could wipe off fairly easily.
The animated cartoon character Winky Dink would have various adventures on screen, and at different points he would find himself needing help to continue, in the form of stairs, ropes, bridges, and so forth, or some hand object to use. So he'd ask the kids at home to draw them for him on the screen.
Single lines would appear briefly on the screen, which the kids would try to trace, eventually building an entire object. Then Winky would walk over it, or climb it, or whatever, and be helped.
Except, some little kids got too excited seeing Winky sometimes in trouble, and they're hit the screen with all kinds of objects. Those old glass cathode ray tubes exploded like bombs.
Plus other kids, not having the official kit, figured that could use their own regular Crayola crayons instead, directly on the TV screen. Except ordinary crayon is very hard to remove, and Mom would find the TV screen obscured with a waxy mess. Then she'd douse the screen with Windex or some other cleaner, and discover another thing you should never do with a tube TV. ZAP!!!
Lastly, kids quickly realized that Winky was going to cross a bridge anyway, whether one was there or not. So that interest in going through all this bother to help him by drawing something soon faded, and the story lines were pretty lame & repetitious, anyway.
Ah, early TV.