Mashwrx,
I tried to recreate the noise you describe on my car by moving the clock housing and mine does indeed creak

Try applying some silicone based cleaner (ie back to black) in copious quantities along the seam of this housing. You can do this by spraying the can into the cap to collect a few cc's then "pour it around the junction and wipe with a cloth. Failing that try pushing small pieces of soft rubber cut into small strips into the heating vent surrounds etc.
You will be surprised how many creaks you can cure just by lubricating dried out plastic trim though.
Yorkie