I bought a piece of black furnishing velvet to try as a backdrop for photographing my models.
I've hung it off a frame at the back of my photo box, draped forward over the floor of the stage.
I have three fairly powerful daylight LED bulbs over the stage, which is just a translucent plastic storage crate. There is a mirror tile on either side to reflect some fill light back into the scene. The minis in the scene are 15mm plastic PSC early-WWII Germans.
My camera (a Nikon D3500), in common with all cameras with automated exposure controls, tends to freak out a bit when a scene is overwhelmingly dark or light. Fortunately, it has pretty easy exposure compensation controls, although finding the exact degree of over- or under-exposure is generally a matter off guesswork and trial and error.
This image has been underexposed by one stop, and though the minis look a little dark, the colour card is still a little bit washed out as the camera struggles to get the right exposure.
This one has been underexposed by two stops, and everything is pretty dark.
The velvet background is nice and black, but the white of the exposure card is perceptibly grey, and the minis are very dark. I could probably bring them out with some post-processing, but I suspect there would be a lot less faffing about involved in darkening the background of the first image than in trying to get an acceptable tonal range in the minis in the second.