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Light switch advice
(lemmy.world)
Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io
Install Enocean wireless, battery free switches. I've used them for many years, they work awsome. The switches can go anywhere you want (double side tape on any surface) or screw in as normal light switches. The act of pushing the button generates enough energy to send the RF signal to a receiver you install with the light and its powered from AC mains.
Link to horrible amazon