WiFi
Happily I ordered the Elgato Key Light Air, as that should provide the light that I was lacking. Assembling and connecting it was very easy, but when it came to adding it to my home WiFi I ran into some unexpected issues. As is customary with this kind of IoT-ish device, the setup is to connect to it’s own WiFi through a management app, in this case the Elgato Control Center, and then use that to connect it to the WiFi of your choice. For the life of me, I couldn’t get the Key Light to connect to my home WiFi, it just timed out with an unexpected error—which is very unhelpful.