One of the favorite games of children is playing spies, which means they love products that give them an edge during spy games. There are some great devices that make a child feel more like a spy such as Glasses with night vision. Night vision glasses give the person the ability to see at night through specialized lenses. You can buy night vision in either infrared or thermal vision. Night vision glasses can be found in specialty spy shops, sporting and camping stores or through stores online who specialize in these kinds of items. The cost of these products can run from $99 to $300 for more advanced glasses. If your child is a spy fan then he or she will be thrilled to have glasses with night vision.