Quantity   Component name
1 × Hallowing M4 https://www.adafruit.com/product/4300
1 × US-100 Ultrasonic Distance Sensor https://www.adafruit.com/product/4019
1 × Mini Oval Speaker https://www.adafruit.com/product/4227
1 × Lithium Ion Polymer Battery - 3.7v 500mAh https://www.adafruit.com/product/1578
1 × Glue (epoxy or superglue)
1 × Paint (optional)