Rarity's fainting couch and Pinkie Pie's party cannon

Rarity is always prepared, with a couch available if she feels the need to faint. And Pinkie Pie has immediate access to a party cannon and a whole lot more. This calls back to a grand cartoon tradition of being able to pull items out of nowhere.

But what happens when that no longer works?

That's the premise of my next one-shot story, Hammerspace.