I just ordered a few of the ESP32-C3 super minis to play with... even though they can have WIFI signal issues (work arounds are published).
I am going to create some i2c sensor based 'Zone' monitors, since my house has a number of 'Zones'... do to its design. I did this with Pi Zeros years ago, that updated a database, and let me watch how my house climate changes, room to room, zone to zone.
Get this, I can tell where people are in what room, based on the humidity level changes! Go figure.
And to some extent, what they are getting up to! 
@jbudd, well that would need a camera! LOL
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