Dirtsurfer

Has anyone accessorized their car with something subtle (won't be noticed unless told or carefully looking for)? I have been working on a somewhat deepset grille. It's getting close to painting time and was thinking about doing something subtle. Airbrushing something on the underside of the top so it could only be seen if the hood is open or through the reflection on the bottom bar. I thought about a Chevy emblem but, I already removed all emblems. Is it too much, wasting time, hurt resale? Thoughts?