Idea: an anti-burglary sensor that turns on a bunch of those extremely bright stadium lights, except indoors, making it literally impossible to see due to too much light.
Recurring reminder that whenever you see a sensationalist headline that claims "scientists don't know why", what it usually means is "scientists have not found a conclusive proof of the mechanism, but they have a lot of postulates as to why".
If you have a Nikon Z camera, and an AF-S 200-500 ƒ/5.6 lens, you should seriously consider getting the 1.4x teleconverter.
Don't worry about it becoming an ƒ/8 lens. These cameras are too good. I'll post more photos later, but have a look at this one, taken at full 700mm, ƒ/8: