Entrenching tools or e-tools are an invaluable item to keep in your car during winter. These spade-like tools are good for moving dirt and snow and for loosening up hard earth. Originally designed for soldiers to dig their own trenches and foxholes and for use as a close quarter, back-up weapon, entrenching tools are distinguishable due to its spade and pickaxe combo appearance. Though not as effective as a full-sized shovel, especially for moving snow, an entrenching tool will still help out in a pinch.