How to replace a on-the-wire switch by a smart device?

Question

I would like to replace this

with a smart, Wi-Fi enabled device (Zigbee could be OK as well) that I could also command from Home Assistant. I would absolutely like to retain the capacity to switch the light manually.

One possibility would be to replace the switch with a Sonoff Basic but the switch (the small black button) is really tiny and rather a backup than a real switch.

Are there devices that would fit the bill?

Answer 1

One possibility would be a Shelly Button with a Shelly 1 inside.

It can use its own firmware or be flashed by something like ESPHome (both are supported in Home Assistant)

The setup is not cheap, though (~12€ piece)