Us my insanely high Occult to determine just what it is.
Upon figuring it out, bury it somewhere nobody can possibly find it.
Fail to account for the one Daimah Nephilim previous PC from 6th heaven who has Shiny-sense and a knack for retrieving shinies she shouldn't fucking have.
She gets a hold of it, accidentally opens it.
Cenobites have to deal with basically pic related running around(at nearly a hundred miles an hour), poking their shiny bits, hugging the Femobite, and just generally avoiding everything they throw at her through sheer ADHD plus caffeine-level hyperactivity.
I think eventually Pinhead would just say 'fuck it' and boot her out of there, maybe putting a enchantment on the box keeping her from opening it again.
If the Empress gets sucked in, though, the Cenobites are doomed. Her bodyguard is a reality-buster when she's in danger.