A case to make an IR blaster using an ESP8266 with the D1mini form factor and an IR Transmitter breakout board like https://www.amazon.com/Gikfun-Digital-Receiver-Transmitter-Arduino/dp/B0816P2545/

This allows for easy control of IR based devices (fans, lights, etc.) using the ESP8266 as a programmable remote! In my experience it is easiest to use Home Assistant and ESPHome.