Clicking noise coming from the vents...

[maxvq]

Hello all, I drive a 1997 Nissan Maxima GXE, and I have a bit of an annoying problem. Everytime I drive over the slighest bump in the road, I heard this clickidy clack noise coming from the vents that are right on top of the climate controls. I have no idea what could possibly get loose in there, and I am too afraid to pop everything out if I know I can't place it all back in, but does anyone know what that noise could possibly be?

[snwbrdr435]

its not hard to pop out the dash at all all you need is a panel popper or a flat head screwdriver and a towel so that you dont scratch up your dash