I gotta say, the Ikea ALPSTUGA air quality sensor is also a pretty nice LED clock for the bedroom, especially if you already have a Matter hub. I ended up moving my fun thrift shop find clock radio into the office.

What's nice about it:

* Smol
* Not too bright
* Gives me useful air quality and CO2 and humidity metering for my bedroom (and the other two rooms I have one in, in addition to the other Matter-enabled meter in the living room)
* Automatically sets the time

What I don't like about it:

* No way to cycle display mode automatically
* After a firmware update or a power cut it resets to the not-a-clock mode
* HomeKit doesn't separate the sensors out like it does for HomePod Mini

But these things might be what gets me to finally switch to HomeAssistant for my primary automation, since HA will treat these things decently and can also do data logging (which HomeKit won't do). Most likely I'll have to band my head against how to get HomeAssistant to bridge things without causing all the things to double up in HomeKit though.

Unfortunately I think I need to still have HomeKit around for some of my pre-Matter devices.

@fluffy Home Assistant can adopt HomeKit devices!

@noiob I'm aware, the problem is that when it does it ends up reflecting them back to the HomeKit controller and that causes problems.