Use a Nano 33 IoT or a MKR WiFi 1010 to access a TI SensorTag to easily build a powerful BLE data logger.

Remotely operated ground vehicle for sensing the toxic gases which is helpful for firefighters and researchers.

Use an Arduino MKR WiFi 1010 to build a network attached kitchen device.... from a 35-year-old coffeemaker and cook Ramen noodles with it!