I built a cabinet for my kids to hang their backpacks and coats in and wanted a hook that mounted to the top surface of the cabinet and was flush to the back.  This is a simple J-hook that does just that.

The mounting holes are countersunk for #6 wood screws.

I printed it with the base down and organic supports enabled, which worked really well.  I have also tried it rotated 90 degrees so the body of the hook is on the plate, which also worked but I didn't like how the layers ended up in that orientation.  The body and curve of the hook are smoother when it's printed vertically.