There must have been 100 folk with the same idea at the same time, I'm very excited for having something like this running mics in my home so long as it's running locally (and not costing $30/mo. in electricity to operate). Lots of starter projects, feels like a polished solution (e.g. easy maintainability and good home assistant integration etc) is right around the corner now
Have been tempted to try and build something out myself, there are tons of IP cameras around with 2-way audio. If the mic was reasonable enough quality, the potential for a multimodal LLM to comment contextually on the scene as well as respond through the speaker in a ceiling-mounted camera appeals to me a lot. "Computer, WTF is this old stray component I found lying under the sink?"