Umbrella
The song comes to mind.
Childhood umbrellas. I remember a clear plastic one that was shaped like a dome. Not flat like other umbrellas. I believe there was a cartoon character on it. I'm picturing the color red, yellow, and black, but I can't remember what the character was. I want to say Annie, but that might be incorrect. I think there was a red plastic ball on the tip too, but I also remember a long silver tip, so maybe not?
I tried jumping off the jungle gym with it once. You know.... to use it as a parachute. It didn't work. I considered jumping from higher spots to catch more air, but wasn't completely confident that that was the problem and decided to not take the risk.
I experimented but I wasn't a complete idiot.