Your glove compartment is a double-edged sword. It's a convenient spot for car essentials, but it can also be a target for thieves or become a damage zone, depending on what you keep inside. A study by the National Insurance Crime Bureau survey on glove compartment items found that a shocking 60% of people admit to leaving valuables in their car, making them prime targets for smash-and-grab thefts. So here are 14 items (including a few surprising ones) you should never store in your glove compartment.