I’ve seen this one which may fit what you’re looking for. No idea about open source firmware though.

This one might work for you too.

Really though, if you’re already spending money on a smart switch, you should probably just replace the outlet, other switch, and faceplate with decora (rectangle style) versions while you’re at it. It’s only going to run about $10 total for all those. Plus you can then use a smart switch that meets your firmware needs.

Mac for me. Occasionally on the iPad, but I rarely use my iPad for actual work that needs multitasking.

It has become my default desktop experience. I don’t know how to describe why I like it, it just works for me and I leave it on 100% of the time.

Bought my first home right at the end of low interest rates. I wasn’t planning on staying but I can’t afford to move now.

I had that same model, but the U2 edition. I had no idea who U2 was at the time, but I loved the black and red color scheme.

It had a whole 20GB which I never managed to come close to filling! I wasn’t cool enough to sail the high seas at that age.