Night Vision Goggles

Night vision goggles are used by the armed forces to enhance combat and detection during the night. I am not sure where they can be sourced but they are a very effective tool for a prepper to detect movement and dangers at night. Since they are not an offensive tool, I think they should be available for civilian use.

 

If it will be available for common people there will be a pros and cons of it that is why it's only available for armed forces. Bad people might used it for their own selfish motives while good people will use it for goodwill.