I've mentioned the art deco door knobs in our mid-century home.
Sure, it's mixing time periods a bit, but with all the clean lines of mid-century, it's nice to throw in a little elegance and flamboyance in the mix. All the interior doors in our mid-century ranch have these art deco door knobs. I know they're not original to the house (I'm pretty sure they were put in sometime in the '90s), but I still love the look. And you can get the look too with these reproduction art deco door knobs.
From House of Antique Hardware