Custom made air return vent covers. I hate the HVAC guy for putting a cold air return where he did.
Remodel any room in 15 minutes, Fancy Vents are beautiful decorative return air replacement covers hand-crafted and made from ornamental iron.
The Shockingly Easy Way to Beautify Your Ugly Air Vents
Better-looking return air grille. Check out another DIY return air grille solution here. Do you have a baseboard return air grille that looks like this? Not especially attractive, right? I'm pretty sure o.
VICTORIAN AIR VENT COVER 8 X11.5" version FRET WORK