Changing out builder grade vent covers with decorative vent covers is one of the easiest ways to add character to a room while also making your home look more upscale.
cover up that ugly standard vent cover with this easy tutorial. Use a picture frame and Lowe's sheet metal, cut to size, painted.
I wonder if they make these for ceiling return air vents. The Friendly Home: A better looking return air grille. What a good idea.
how to diy an air return vent with an aluminum radiator cover from a home improvement store