When I was 10-years-old, with the help of my childhood friend John Buchta, I converted my Schwinn Stingray into a flying bicycle.
It was quite an engineering feat for two young boys. We took a clothes hangar rod out of a closet and used it as the wing spar, and then formed a wing shape around it using flattened corrugated cardboard boxes. We then placed this wing underneath my banana seat to complete the Flying Bicycle.
For the test flights, we set up a jump ramp made out of an old sheet of plywood placed at the bottom of a small hill, and then proceeded to fly off the ramp all afternoon long.
We probably never got higher than a normal bike jump, but to a couple of 10-year-olds, we were flying!
And that childhood memory was the inspiration my upcoming cartoon, The Flying Moose.