I don't remember being disappointed that I couldn't have a store bought costume, but I did want a more authentic flying helmet than a paper bag over my head and my dad's work goggles, but I have to admit, it worked!
I think in later years my mom would say that when she worked on it, my Dad thought it was a dumb idea, but when I was so happy with it, and that it won the most original prize, he shut up about it.
It's really no wonder I got all into Airplanes, why I got to fly as an Aircrewman in the Army, why I'm perennially getting my pilot's license. I didn't stand a chance...