You can paint a hole in the side of mountains and fool roadrunners into running in(to) them, then perhaps feast on the fruits of your labor. Or paint holes in the ground to fool your nemesis'. Though if Looney Tunes taught me anything, it's that it only works when you don't want it to work.

~"Sensitive optics"

A list of examples: https://en.wikipedia.org/wiki/Vantablack#Applications

It looks very interesting when you use it in constrast to other colors. Under the right conditions it creates an effect of "absence" that the human brain (at least mine) doesn't have a reference for.

Coating insides of optical instruments, especially infrared cameras.

On my Ikea Hemnes corner desk I painted most of the hutch, plus the bezels on the 2 24" panels in it. It's like the displays are floating in the void.

I could add things like car dashboards to the list, to avoid annoying reflections.

And also for better "Pepper's ghosts". Which is based the same effect that makes you see your car dashboard reflected in the windshield.

Painting satellites so they do not annoy astronomers. Bright satellites show up as lines in long exposures. A wide field sky survey image may be full of them.

Home theaters using projectors is the use-case for me.

But I stick with triple black velvet which seems to be even blacker than these paints due to the 3d texture to it being able to trap and absorb more light.

I’m building a telescope and would love to use it