More one project, but this with ESP8266 NodeMCU.
It's Christmas, so how about a "IoT Christmas Rug", which warns via Facebook Messenger that someone is at the door and still plays Jingle Bells, all this with Espruino on our ESP8266.
Check it out the article about it: https://microhobby.com.br/blog/2018/12/24/iot-christmas-themed-rug/
And I made a vídeo showing the use, audio are in portuguese but I wrote english subtitles :
Merry Christmas everybody!