Nice job with your sensor display (I take it you designed your own Habpanel widget for this?). For the lightning detectors, check out Blitzortung - I haven’t taken a plunge on buying their kit yet, but have been thinking about building one myself. I think my wife would kill me if I did what you suggested, though
To add to the discussion, here’s my DIY sensor design, based on NodeMCU/ESP8266. It measures temp/humidity(DHT22) and motion (HC-SR501 PIR) and displays it all on a local OLED screen as well as publishing it to MQTT/OH. I have too much on my plate right now, but in the future, I’ll be adding support for analog sensors (e.g. differential pressure to monitor my HVAC blower) and luminosity sensors, as well as possibly adding servo control (HVAC register adjustment).