TheNose is a gadget for monitoring in-door air quality and visualizing it with a RGB LED shining through the tip. In addition, the data is saved to a MQTT broker in the local network, so that all values are available on a Node-Red dashboard. The original thing is using a Bosch BME680 sensor breakout board and an additional prototyping board carrying the ESP8266 controller as well as the LED and a voltage regulator. The mechanical parts may however also be used for any other similar purpose.
I printed the nostril grids with black PLA and the other parts in white to allow the LED shining through the material.