Hue Smart Plug
A simple, effective product that's barely more expensive than a generic model.
I have an iPhone, so you can use it directly via Bluetooth with HomeKit or the Hue app, or with the Hue Bridge to control it with the Siri voice assistant.
There's a coloured I/O indicator light, and the contactor (like any contactor) emits a little click when it activates/deactivates the power supply.