Air Wedge

This bag lies flat, allowing it to be be used for door jam entry techniques, slipped under heavy objects, between objects that need to be moved apart, and between a moving component and an unmoving surface (like a locked car door). By slowly inflating the flat bag, it can allow users to, for instance, create space to access the door latch or access the lock mechanism of a car door.

These expanding bags can be slipped into place and inflated allowing access for other tools to bypass latches and access things like a vehicles unlock button.  Its one of those universal tools that has many applications.