how to diy an air return vent with an aluminum radiator cover from a home improvement store
How to Make a Decorative Air Return Vent Cover - Simplicity in the South
Make a flush insert/floor vent cover, without the air holes.
how to make a decorative air return vent cover, wall decor
I wonder if they make these for ceiling return air vents. The Friendly Home: A better looking return air grille. What a good idea.
Radiator screen vent cover - hiding the subwoofer with a cold air return metal vent? Cloverleaf pattern from Lowes
The Creek Line House: How to paint your vent covers instead of paying to replace them!