Here’s how former big-box stores transform into seasonal Halloween pop-ups. Despite the brick-and-mortar retail apocalypse taking place across the country, Halloween pop-ups like Spirit have endured. When traditional retailers file for bankruptcy and leave empty big-box stores in their wake, they also give Halloween retailers more potential locations to choose from. Shockingly, even the rise of online shopping can’t seem to kill the Halloween store. All of this would be impossible without the existence of vacant retail properties in need of tenants, even if those tenants only plan on being there for a few weeks. What’s bad for retail is good for Halloween pop-ups, at least to a point. These companies need vacant spaces to fill, but they also need nearby stores to draw in consumers.