It's not an armband, and it coming from the town means it won't come into play until everyone is Off Train, but Emporio will be finding a 'Ghost Bag' while rooting around the place; this effectively gives it the same properties as a standard bag of holding (though he won't be keen on shoving bruisable fruits and such in there), so if anyone wants to shove stuff in there Here He Is.

He's already stuffed a ghost blanket in there because shush.