I have recently been looking for this! If you are able, my ideal design would be to make a kinetic switch (which uses the kinetic energy to power the signal); alternatively a battery (2032 or so sized). The switch would have a rocker switch that returns to center. Pressing the top would send a 1/on signal and the bottom, 0/off. Then rules takeover, if on, then talk to the smart bulb/plug/etc.
For mounting on the wall… If the kinetic switch can be 2x3 in., it can replace the existing switch utilizing the existing gang box and faceplate. If it is battery-powered (this being flatter), the wyze face plate could have a keyhole mount on the back which requires no holes in the room just two screws and sits on the surface of the wall.
Now smart bulbs can be placed anywhere in the house and can still be used with a physical switch and also automation. With a wireless option, it would allow mounting ANYWHERE in the house/office/garage wherever there is a bridge nearby. For me this is a must. I have no desire to run wire to half the places I need them. Thanks!