hey @chasenbeck
try the open source ha-bridge, which emulates hue devices so you can utter “turn off”, “turn on” and “dim” and easily get voice activated gpio control without the complexity and sometimes extra cost of the google home api. No hue device actually needed, since you can use the “execute script” option to run pretty much any script, e.g. python /home/pi/py/on.py, wherein you set up and control the gpio pins, say with RPi.GPIO. I’ve tried it and it definitely works.
It’s limited to those phrases but may be enough for you
Works with Alexa, as well