If anyone wants to try it out, I wrote up a guide on how to compile and install the MicroPython firmware for the ESP8266: https://learn.adafruit.com/building-and-running-micropython-... Note that it's still very early in its development so it doesn't support all the functionality of other MicroPythong boards, but it does have enough implemented to start hacking around with it like blinking LEDs and connecting to internet services.