Plastic kits, for me and my brothers it was mostly aircraft, that taught us fabrication techniques with solvent adhesives and primed us for modern methods of construction.
A strange thing; I was in a motorcycle club, and one winter's evening there was a modelling night, people were encouraged to bring in whatever they'd got lying around.
I took in this Revell kit Zeke floatplane on a metal stand. The model had the tip floats removed, all detail was filled and sanded and the whole plane was painted a carefully blended silver/aluminium. It looked like a solid casting, and drew respectful comments. On finding out it was "only plastic", the interest fell rapidly. Now that's strange to me. It took imagination, skill and execution to get the result and it didn't look any worse after the revelation than it did before. Ain't people odd?