My "first" prop was a hoverboard from BTTF 2, It was bad....really bad. Just a piece of wood.:rolleyes
Here is a Lightsaber i made in 1998 i think. Made from household paper roll.
It have lost a few details like the edmitter and some grips
This one i made a few days later, This is more detailed.
Here is the first startrek prop i made
At the time i thougth it looked good, but now i know better....
So at a later time i went back and used layered plastic to cut out a new one:
I only had that picture of the knife for reference.
Old one

New one
/Conny