This is an updated design for my other Secondary Shower Head Holder. After using it for a while, I found that it would be easier to replace the shower head in the mount if I removed some of the material from the lower portion of the clamp. I also reduced the radius of the clamp slightly to make it more in line with the original design intent. A side by side comparison of the two interfaces is shown in the second picture.
I printed out a prototype of v2 to try out the interface, but haven't replaced my v1 print, hence the recycled cover photo.