we currently do have a selection of vanity gear, such as holiday items and some plat things like star robes (might be useful, but still vanity-like)

so, why dont we make it a customary kind of drop? notice how we skip a lot of minibosses in BS, such as oil slick (thx rushing thread) and if we could get themed mini-sets from them, it would make the general game more exiting per run.
so far, we have always gotten around 1 chance at cool stuff in a single run of a dungeon, except in boss brawl places and where there are mini-bosses (which you have to go through anyway).
If we could get garbage camo gear, maybe a trashcan shield, things that are more used for looks and to carry around town.
it doesnt have to drop very often, making it as rare as the usual gear makes it valuable and more of a collectors piece, instead of ending up with everyone in town owning a full set.