Demons in the dark
Just what they sound like.
These wondrous items look a bit like rubbery leaves. They have overt look of something like cactus leaves.
They are slipped on over the ears, at which point they become, effectivley, Hats of Disguise. They are restricted, however, to only one “look”, a drow.
These are qcquired for qdventurers who don’t want to automattically be killed when going intoa drow city. The Day of the Damned is the best time to use them.