Step 1: What was available
Step 2: Raw material
Step 3: Customizing the hammer hanger
In the second photo below you can see how the "U" shaped piece aligns with the contours of the hammer. I used this process to determine how much angle to use on the piece I bent in the setup for welding it to the commercial hanger.
In the third photo below I placed my customized hanger into the vise to adjust the angle on the customized hanger so the hammer's handle hangs straight up and down.