change bag

noun2

1. •
   A bag, consisting of two or more compartments (pockets), that allows for the illusion of transforming an object into another, or making an item disappear.

   • Some years ago, before the demise of vaudeville, when acts of this kind were so popular, the necessary switching of the papers was done by means of the magician's change bag. — 1949
2. •
   Synonym of diaper bag.

   • Always repack the change bag the moment you get home. — 1999