I would like to keep the current water mixer as it is, and install the hand shower without getting into the hassle of destroying the wall. I am looking for an aesthetic approach to it.
[![current water faucet](https://i.stack.imgur.com/CiHWE.jpg)](https://i.stack.imgur.com/CiHWE.jpg)

I have to implement this in twenty two bathrooms. Can somebody suggest a solution to this?