Simple over door hook where you can set the depth of each section and the length of the 3 uprights as well as set a different thickness for the over door part to the rest of the hook.

Fillet will round off the edges of the hook part so may need support.

Curl makes a curled bottom to hook rather than square

UPDATE 1.2.1 - Added option for 45 degree angle on end either filleted or not. UPDATE 1.2.2 - Amended code to reduce angles of cut when very short length1 values used in comparison to width

Print it on it's side.