I really love Hak5's Rubber Ducky. I've seen similar projects but none with Adafruit's CircuitPython. Last year we at India Linux User Group Delhi (ILUG-D) celebrated CircuitPython Day and that was when I first got my hands on Express boards. The best thing about this board is that you got everything on board like Speaker, Mic, Bluetooth, Accelerometer, IR sensor, etc. I really like the fact that it can inject keystrokes via USB, Yea something similar to Rubber Ducky!Read more about it here: https://www.hackster.io/p5g41tmlx/rubber-python-f0d023