Magic Balloon

Good thing I found a magic balloon!

Any item that either conveniently appears to aid the user or is already with the user by the time they need to use it in spite not having any preexisting reason to have that specific item on them can function as a Magic Balloon. Magic Balloons often go unexplained as to how they got there, why they're there, or why the user has one if they already have it instead of just encountering it along the way. Magic Balloons can be thought of as the object form of Ex Machina.