Some random suggestions concerning sets and backgrounds…
A harem or haremesque set or background. Maybe combined with “nude in metal” as this would be a natural fashion for a harem’s inmates to play with.
A bookcase or (implied) library background. Maybe with some “geeky captive” scenarios. Bound librarian. Or maybe “this is the penalty for being late in returning books to the library.” Or “someone tried to sneak into the ‘restricted’ section and got caught.”
A behind the scenes look at how the bondage pole is set up and lit.
Not sure how feasible this would be, but if the bondage pole set could be given a colored glow background, red, or blue, or some other color. This might be used in a “taken captive by aliens and kept in the specimen chamber” set.