I grew up during WWII and its aftermath when there were lots of shortages, and that included toys. So I'll vote for John Denver's marvellous toy. It went zip when it moved, pop when it stopped, brrr when it stood still. He never knew just what it was so I guess we never will.
Schwinn Stingray Bicycles.
Jacks, I was very good at playing.
Big Wheels for adults !
An Aeroplane, but this time a real one :)
Barbie caravan !!! I had two and used to pretend they were roller skates .... I had all my barbies dismembered under my bed so I had to do something with the vans . I'm honestly not kidding about keeping my Barbie's body parts under my bed or using their vehicles as roller skates ... I just realized I joke so much on here I may not ever be taken seriously :(
Otis, it's the slinky, c. 1946...this thing could walk down the stairs on its own steam...drove our kitten nuts...
Not really a specific toy, I just wish they were built like they used to. Toys back in the day were made to last. Not so much any more.
I'd like to have my old Mysterian ray gun. It used to shoot sparks out the front.
The doddle bear.