Re: Combadges from a prop perspective - placement and positioning
Another thing about the comm badges...
In-universe, they were gold metallic, shiny.
The real production props weren't metallic and had a dulled finish. This was to prevent set lighting glare and lens flare on camera.
So anyone wanting a comm badge would have to chose between real-life authentic prop quality (dull flat finish) versus in-universe depiction (gold metal look, shiny).
When I was a kid I took one of the standing bases from the Playmates action figures, glued a pin to the pac of it and wore it as a comm badge. It was pretty accurate, about the same size and look on the show. The only real inconsistancy was the presence of a peg (for the hole of the bottom of the action figure's foot to attach to) but that was minor.
"Internet message boards aren't as funny today as they were ten years ago. I've stopped reading new posts." -The Simpsons 20th anniversary special.