This iOS app handles up to 100 Bluetooth-controlled sensors for temperature and humidity
I would also like to see SensorBlue compatible sensors to be natively supported by HA new Bluetooth integration.
They have really cute, really small and cheap Temp + Humidity sensors like the WS07.
They are sold under different brand:
Oria : Amazon US or Aliexpress
Brifit : Amazon UK
There is also an old HACS Integration for those sensors.
These Bacons are now handled by the ThermoBeacon Integration as a Lanyard/mini hygrometer 0C95 showing temperature, humidity and battery voltage.