Do you know what is the pressure or altitude of your surrounding?
Have you ever wondered about the temperature and humidity of your surroundings?
Build a project on IoT Heart Rate? Read this tutorial.
Although no official support for ESP32-S2 on Arduino, you still can do it.
Another wireless protocol developed by Espressif, called ESP-NOW.
Measure your surrounding (e.g. people nearby) temperature with contactless reader.