Headcannon there are these long black flowers in Hades's throne room in a beautiful long vase and so they're like connected to Nico?
If he's injured or sad the flowers wilt and if he's thriving and happy then the flowers are in full bloom so Hades uses it to kinda look over Nico, he doesn't want to invade his privacy by just looking at what he's doing, those flowers just let him know about how Nico's doing and like they were Persephone's idea because she remembers how irritating it was when Demeter used to watch her all the time and so she made that












