So, something I think would be cool is Auras
So, they would be attached to items, like, a halo would have a sparkly bright aura, an exe mask or a Krampus would have a dark shadowy aura. Could work with wings too, Dark angels and light angels.
So, the way it could work is, you buy the aura, and you get auras for each item, so you could buy "Dark Angel Aura" or a "Halo Aura", and auras could just work on the more rare items. Maybe even wands ?
Just a small suggestion that I wanted to share, open to suggestions and positive criticism.