This was pinned by The Friendly Home.
It just happened that my Dad was creating new radiator covers for my parents house and had a lot of patterned sheet metal from the old covers. He also offered to build them for us, he enjoys woodworking so it was a win/win.
Our covers are a little different from The Friendly House's covers. My Dad designed them to be a wooden frame with the sheet metal in the center. We did not remove the old vent covers, these covers fit like a picture frame right over the old ones and are screwed right into the wall.