I plan on picking up and extra center vent for my ED, trimming the vents and mounting my guages in it, then making a flat black cover OOORRRR you take a really high quality photo of the unhacked vent, attatch it to the cover and if anyone looks in it'll just look like the vents

 

A flip up cover would be cool, I was looking at the dash this morning and maybe I can build them behind the vents in the centre and integrate some sort of flip down cover.
The Hi-res pic of the vents would be very funny.