Didn’t do a lot in this one, since I’d added a lightbulb a while back. But I did add a little spot lamp to it so that it created that light out there, my lightbulb wasn’t doing that already.
With my bulb, I made it nice and big, and gave it a small emission value. Bigger mesh lights produce significantly less noise as a side effect of making softer shadows, so since it’s big and weak, it adds very little noise to the scene and I can get by perfectly on 100 samples + denoiser.