I came here for help, and found info about the Rubbermaid 5E12 hook. I went out to my local Home Depot to find them, alas, no luck.
What I did find though was this, a similar device made by Crawford (Model CMHH, also a hose hanger.) which retails for CA8.99 at HD.
Although the footprint seems to be a little bigger, the entire thing is powder-coated and rubber-dipped from the back bottom all the way up to what would be the top front. My headphones, (CSB Tactic3D Rage, pls don't judge them, I come in peace) when closed, hang with about 2" below to spare. So i share this info to say thanks. hope it helps someone else.
I think because my account is new I can't post pics, but here's a link to the item on the Crawford site.